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, Carrie Halperin and JP Lawrence

INTERNAL REVENUE SERVICE The Hills' Bernie Becker: " House questioning IRS staffers in Ohio" House lawmakers are intensifying their investigation into the IRS's targeting of conservative groups, congressional sources said. Investigators from the House Ways and Means and Oversight committees were interviewing two staffers from the IRS's Cincinnati office this week as the panels seek information about how and why the targeting began, according to an aide. LINK

IMMIGRATION REFORM The Los Angeles Times' Lisa Mascaro: " Opponents of immigration reform face changed landscape" It's not as if Republican Rep. Steve King missed the message from party leaders about how supporting an immigration overhaul could help boost the GOP's standing among Latino voters. He just isn't buying it. LINK

ATTORNEY GENERAL ERIC HOLDER / LEAK CASES The New York Times' Charlie Savage: " Holder Weighs Tighter Rules on Prosecutors in Leak Cases" Attorney General Eric H. Holder Jr., under fire over investigative tactics in leak cases, has opened internal discussions over tightening rules on when prosecutors may seek phone logs and other information that could identify reporters' sources as he began a series of a meetings on Thursday with leaders of news media organizations. According to an adviser familiar with the deliberations, Mr. Holder has discussed expanding a requirement for high-level review of proposed subpoenas for reporters' phone records so that it would include e-mails. LINK

Politico's Dylan Byers: " Eric Holder to media: I get it" Attorney General Eric Holder expressed concern on Thursday about how the Department of Justice has handled recent media investigations at an off-the-record meeting with leading representatives of the press, according to those who were present. At the session, Holder and Deputy Attorney General James Cole expressed a willingness to revise the guidelines for such investigations, journalists present at the get-together told POLITICO. LINK

JAMES COMEY The Washington Post's Jerry Markon and Sari Horwitz: " Civil liberties groups criticize Comey, but colleague praise him" The pending nomination of James B. Comey to be FBI director began on Thursday to reopen old debates over George W. Bush-era national security policies. And despite Comey's well-publicized role in challenging some of the controversial practices, he has come under attack from civil liberties advocates. One day after President Obama's plan to nominate the former senior Justice Department official to run the FBI became public, the American Civil Liberties Union became the second civil liberties group to raise questions about Comey's involvement in the Bush administration's post-Sept. 11 anti-terrorism tactics, such as warantless surveillance and tough interrogations. LINK

FBI DIRECTOR NOMINATION ABC News' Abby D. Phillip: "Obama's GOP FBI Pick a Folk Hero for Democrats" James Comey, the man President Obama is likely to nominate as the new director of the Federal Bureau of Investigation, may be a Republican, but he's near and dear to the hearts of many liberals in Washington. The former Bush administration official became something of a folk hero for some of the most riveting congressional testimony in history. LINK

USA Today's Kevin Johnson and Aamer Madhani: "Obama's FBI pick Comey seen as independent, principled" Nearly two years ago, when Obama administration officials were just beginning a search for a successor to FBI Director Robert Mueller, James Comey was on the short list. His broad law enforcement experience - as the former U.S. attorney in Manhattan and later as the deputy attorney general in charge of the daily operations of the sprawling Justice Department - was a biography that all but spoke for itself. LINK

HEALTH CARE The Washington Times' Susan Crabtree and Tom Howell Jr.: " GOP senators want IG probe of Sebelius' 'Obamacare' fundraising" A malfunction in a fail-safe system designed to assure compliance with federally mandated diesel emissions standards forced a D.C. ambulance to shut down on Interstate 295 while its crew transported a gravely injured gunshot victim Wednesday. LINK

DEMOCRATS The Wall Street Journal's Peter Nicholas: "Party Pushes Obama to Sharpen His Message" President Barack Obama has a policy agenda. But what he needs, some Democratic allies say, is a better story. He is on the airwaves constantly, talking about immigration, gun control, drone strikes and natural disasters. LINK.

REPUBLICANS ABC News' Shushannah Walshe: "Ann Romney 'Very, Very Partial to Paul Ryan' for 2016? Ann Romney this morning gave her first solo interview since the November election, weighing in on the recent scandals hitting the White House, as well as 2016 presidential politics, saying she and husband Mitt Romney are "very partial" to his former running mate, Rep. Paul Ryan, R-Wis. "There are some great candidates out there and I think Mitt and I always are very, very partial to Paul Ryan, but we don't even know if he's going to run. 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