The Note's Must-Reads are a round-up of today's political headlines and stories from ABC News and the top U.S. newspapers. Posted Monday through Friday right here at www.abcnews.com

Compiled by ABC News' Jayce Henderson, Amanda VanAllen and JP Lawrence

MEMORIAL DAY: ABC News' Abby D. Phillip : " Obama Honors Fallen Troops, Looks to the War's End on Memorial Day." In a solemn ceremony at Arlington National Cemetery, President Obama today called on Americans to never forget the sacrifice of soldiers who served in harm's way and died for their fellow countrymen. "America stands at a crossroads, but even as we turn a page on a decade of conflict, even as we look forward, let us never forget as we gather here today that our nation is still at war," Obama said. The president laid a wreath at the Tomb of the Unknown Soldiers, a monument that commemorates soldiers killed in U.S. wars whose remains have never been identified. LINK

Politico's Kevin Robillard: " President Obama in Memorial Day speech: Don't forget those serving" President Barack Obama reminded Americans on Monday not to forget the soldiers still fighting in Afghanistan during a Memorial Day speech at Arlington National Cemetery. "Regardless of reason, this truth cannot be ignored that today most Americans are not directly touched by war," Obama told a crowd gathered at the cemetery's amphitheater. "As a consequence, not all Americans may always see or fully grasp the depths of sacrifice, the profound costs that are made in our name, right now, as we speak, every day." LINK

DRONES: The Hill's Jeremy Herb: " Fewer drone strikes likely result of new Obama policy, analysts say" President Obama's new guidelines on drone strikes abroad are likely to curtail the number of attacks the United States carries out, according to defense experts. The White House's codified policy signed by the president this week requires a "continuing, imminent" threat before terrorists are targeted. The directive also requires "near-certainty" that civilians will not be harmed in the strike. LINK

SYRIA / JOHN McCAIN: ABC News' Abby D. Phillip: " Sen. McCain Slips Into Syria, Meets With Rebels" Sen. John McCain, R-Ariz., has crossed the Syrian border to meet with rebel forces today, ABC News has confirmed. McCain, one of the strongest critics of President Obama's handling of the bloody two-year old conflict between Syrian President Bashar al-Assad and rebel forces, is the highest-ranking U.S. official to visit Syria since the civil war began. The trip was first reported by The Daily Beast's Josh Rogin. McCain traveled across the border from Turkey to Syria with Gen. Salem Idris, leader of the rebel forces known as the Supreme Military Command. Idris has become the principal interlocutor between the international community and the highly localized Syrian rebel movement. LINK

The Washington Times' Cheryl Wetzstein: " In secret trip to Syria, McCain hears rebels' pleas for help" As international discussions on Syria's civil war loom, Sen. John McCain, an open critic of the Obama administration's approach to the civil war, on Monday became the highest-ranking U.S. official to slip into Syria and meet with the forces seeking to overthrow the regime of Syrian President Bashar Assad. In a surprise visit, the Arizona Republican and former presidential candidate entered war-torn Syria through Turkey and participated in a meeting with leaders of the Free Syrian Army. LINK

TERRORISM: The New York Times' Peter Baker: " In Terror Shift, Obama Took a Long Path" The pivot in counterterrorism policy that President Obama announced last week was nearly two years in the making, but perhaps the most critical moment came last spring during a White House meeting as he talked about the future of the nation's long-running terrorism war. Underlying the discussion was a simple fact: It was an election year. And Mr. Obama might lose. LINK

IMMIGRATION REFORM: The Washington Post's David Nakamura: "Conservatives stymied in attempts to weaken immigration reform law" Over the past three weeks, Sen. Jeff Sessions tried everything he could to blow up a comprehensive immigration bill. The Alabama Republican offered 17 amendments, championed the concerns of border-enforcement employee unions and decried the cost to taxpayers. LINK

OBAMACARE: Bloomberg's Alex Nussbaum: " Obamacare Unveiled as California With New York Lead U.S." While politicians in Washington argue over the Affordable Care Act, its ultimate fate is being decided far from Capitol Hill. Amid the periodic repeal votes in Congress and activist campaigns on both sides of the debate, states from New York to California are striving to meet an Oct. 1 deadline to implement the heart of the health-care law, the online insurance "exchanges" meant to enroll millions of Americans. LINK

POSTAL SERVICE: The Los Angeles Times' Wes Venteicher: " Postal Service is on its last legs, with little help in sight" With a wide grin and a quick step, letter carrier Kenny Clark brings more than the day's mail to the people on his route in suburban Maryland. Clark, 49, greets nearly everyone he sees by name. He puts packages under eaves on overcast days to keep them dry, reminds people to retrieve keys they might have left in keyholes, and shouts a quick "You OK?" at the doors of seniors. "He's a neighborhood icon - him and his truck," said Amy Dick, who lives on Clark's route. LINK

NEXT NYC MAYOR: The New York Daily News' Rich Schapiro, Tina Moore and Jonathan Lemire: " Next NYC Mayor facing $7.8B fiscal cliff from unions who haven't received a raise in years" Be warned, New York: The next mayor will face an epic challenge in protecting you from paying a whole lot more to get a whole lot less. On Inauguration Day, Jan. 1, Michael Bloomberg's successor will confront huge unpaid bills that will require dramatically raising taxes, slashing spending, or both. Failure could well mean everything from fewer cops on the street to fewer teachers in classrooms - and a New York that is even less affordable for the middle and working classes. Simply put, New York's quality of life is hanging in the balance. LINK

OTHER: The Boston Globe's Matt Viser: " All sides pressing John Kerry on pipeline" Secretary of State John Kerry, who for much of his career has been viewed as a top ally to environmentalists, is now being looked at warily as many of his former brethren worry that he may commit an act of utmost betrayal: approve the Keystone pipeline. LINK

USA Today's Martha T. Moore and Aamer Madhani: " Is Obama at war with journalists?" The rift between the White House and the media is palpable in the wake of revelations that the Justice Department secretly obtained journalists' phone records while investigating media leaks. Reporters have battled with both Republican and Democratic administrations on matters of government secrecy. In the wake of the Justice Department's actions, President Obama finds himself battling charges that his administration has effectively launched a war on journalists. LINK

The Wall Street Journal's Amy Schatz: " States Raise College Budgets After Years of Deep Cuts." After cutting spending on public colleges and universities during the economic crisis, many state governments have begun to boost higher-education budgets once again. Lawmakers in Indiana recently approved a $500 million funding increase over two years for state colleges and universities, a 14.6% increase, following four years of cuts. New Hampshire's governor has proposed increasing the university budget for the coming academic year by $20 million, or 37%. And state lawmakers in Florida recently approved a budget that increases higher-education funding by $314 million, or 8.3%, following seven years of cuts. LINK

ABC NEWS VIDEOS: " Red Flags That May Have Prevented Oregon School Bombing." LINK

BOOKMARKS: The Note: LINK The Must-Reads Online: LINK Top Line Webcast (12noon EST M-F): LINK ABC News Politics: LINK George's Bottom Line (George Stephanopoulos): LINK Follow ABC News on Twitter: LINK ABC News Mobile: LINK ABC News app on your iPhone/iPod Touch/iPad: LINK