The Note: Trump, Clinton Clash After Orlando

— -- NOTABLES

--CANDIDATES TWEAK MESSAGES, SCHEDULES AFTER ORLANDO SHOOTING: It was supposed to be a turning point in the 2016 presidential race: The first full week of competition between the two presumptive party nominees. But after the mass shooting in Florida this weekend, which claimed the lives of 50 people, there are already signs that the tone and tenor of the campaign this week will be different. Hillary Clinton, who was scheduled to hold her first joint campaign event with Obama in Wisconsin this Wednesday after the president’s endorsement last week, announced the appearance would be postponed “because of the tragic attack in Orlando." She is set to hold an event in Cleveland, Ohio today two hours before Trump will deliver remarks in Manchester, New Hampshire. http://abcn.ws/1Ud0pel

--TRUMP TALKS: Presumptive Republican presidential nominee Donald Trump doubled down on his pledge to prevent Muslims from entering the U.S. “We have to have a ban of people coming in from Syria and different parts of the world with this philosophy that is so hateful and so horrible,” Trump said on “Good Morning America.” The Orlando shooter, Omar Mateen, is a U.S. citizen, and Trump said that people are entering the U.S. “whose hate is equal” to Mateen’s. Trump went on to argue that what the U.S. needs is “intelligence gathering like we have never had before.” More from ABC’s VERONICA STRACQUALURSI: http://abcn.ws/25SSvPL

--CLINTON CALLS FOR ‘DEDICATED TEAM’ TO TRACK LONE WOLF TERRORISTS: Clinton told "Good Morning America" that she plans to establish "a dedicated team" that is "exclusively" tasked with tracking and preventing lone wolf terrorists, such as the shooter who attacked patrons of a nightclub in downtown Orlando Sunday morning. "We've got to really double down on our efforts here in this country and that means also getting the Congress to do something on the common sense gun measures because that's not a separate issue," she said. ABC’s MEGHAN KENEALLY has more: http://abcn.ws/1UvokTB

--WHAT TRUMP WILL SAY TODAY: Senior aides to Trump, who had promised to deliver a speech today taking on Clinton, said plans had changed, according to ABC’s JOHN SANTUCCI. The speech, which he will give at Saint Anselm College in Manchester, New Hampshire, will "further address this terrorist attack, immigration, and national security," according to a written statement released by his campaign.  http://abcn.ws/1Ud0pel

--ANALYSIS -- ABC’s RICK KLEIN: A campaign not known for its serious moments gets another one, with Orlando joining Paris and San Bernardino on the grimmest of lists. It comes when the candidates are ready to get serious, as primary voting winds down and positioning for the general-election heats up. Yet any ramifications are as unpredictable as the responses are predictable. Donald Trump will join Republicans (four words he relishes) in citing the need to address growing threats from violent Islamists. Hillary Clinton will join her party stalwarts (and President Obama, most significantly) in advocating for the need to prevent gun violence. They both have significant points. But it’s the interaction of these two sets of challenges that wades the campaign into uncharted waters. An already angry electorate can easily become a deeply fearful one, and there’s no ready playbook for that kind of campaign.

YESTERDAY ON THE TRAIL with ABC’s VERONICA STRACQUALURSI

BACKLASH TO TRUMP’S TWEET ACCEPTING CONGRATULATIONS OVER WARNINGS AGAINST RADICAL ISLAM. Donald Trump prompted outrage Sunday after saying that he "appreciate[s] the congrats for being right on Islamic terrorism" in light of the deadly massacre in an Orlando nightclub. At least 50 people died and an additional 53 people were hospitalized after a deadly shooting at a gay nightclub in Florida. The tweet caused a firestorm online, with backlash coming quickly from other famous names both in and outside of the political arena, ABC’s MEGHAN KENEALLY reports. http://abcn.ws/25VEkWO

SANDERS PLANS TO MEET WITH CLINTON TOMORROW. Bernie Sanders said Sunday morning that he will likely meet with Hillary Clinton on Tuesday evening, the same day the Democratic Party’s nominating process officially comes to a close with the final primary in Washington, D.C. An aide with the Clinton campaign also confirmed the meeting to ABC News. During an interview with ABC’s GEORGE STEPHANOPOULOS, the Vermont senator said the two of them would discuss Clinton’s priorities as well as the party’s platform, which he hoped would be the “most progressive” the party has adopted to date, according to ABC’s MARYALICE PARKS. http://abcn.ws/1U2NARu

CLINTON FRAMES FIRST GENERAL ELECTION AD AS ‘CHOICE ABOUT WHO WE ARE AS A NATION.’ Hillary Clinton has released her first general election campaign ad over the weekend, just days after becoming the presumptive Democratic nominee, ABC’s JOSH HASKELL notes. In the ad, Clinton frames the election against Donald Trump as "a choice about who we are as a nation" attempting to use the presumptive Republican nominee's words against him, including when he mocked New York Times journalist Serge Kovaleski, who has a physical disability. http://abcn.ws/1Ojw7HA

TOP TRUMP ADVISER CALLS ROMNEY A ‘COWARD’ FOR NOT ENTERING GOP PRIMARY. Donald Trump’s top adviser Paul Manafort said Sunday that former Republican presidential nominee Mitt Romney is a “coward” for not throwing his hat into this year’s GOP primary race. "He's now attacking this past weekend all the other Republicans who ran for president as well saying they should have done a better job,” Manafort, Trump’s campaign chair and chief strategist, said on ABC's "This Week." Well, if he feels that way he should have run. He was a coward.” More from ABC’s NICKI ROSSOLL and  BLAIR GUILD: http://abcn.ws/1UoDJJd

PAUL RYAN DISMISSES IDEA OF CONVENTION CHALLENGE TO DONALD TRUMP. While some conservatives are still holding out hope that there is a way to block presumptive GOP nominee Donald Trump from securing the nomination at the Republican convention next month, House Speaker Paul Ryan isn’t one of them. "The way I see it is he won the thing fair and square," Ryan told George Stephanopoulos in an interview that aired on "This Week" Sunday. "Seventeen people competed, one person won and he got the delegates," Ryan added, ABC’s NICKI ROSSOLL notes. "The delegates ultimately decide these things, but he won fair and square." http://abcn.ws/1sA40tz

IN CASE YOU MISSED IT

ROMNEY: STATE OF GOP ‘BREAKING MY HEART.’ Mitt Romney said over the weekend he respected prominent Republicans who have decided to back Donald Trump, but he got visibly emotional explaining why he couldn't bring himself to do the same. "These things are personal. I love this country. I love the founders, I love what this country is built upon and its values, and seeing this is breaking my heart, for the party that means so much," said Romney, choking up and blinking back tears. Speaking to a crowd of roughly 300 political and business leaders at his annual summit in Park City, Romney said he worried about the example a Trump presidency might set for future generations, that it would lead to "trickle-down racism,” ABC’s INES DE LA CUETARA reports. http://abcn.ws/1PlOiHn

WHO’S TWEETING?

@chrisdonovan: Watch Trump's explanation: "The last thing I want is congratulations. I was right & I have been right & I am right." http://abcn.ws/1Ol8u1a

@TheFix: Orlando shooting exposes Donald Trump's biggest weakness: A total lack of empathy http://wpo.st/ZN4f1 

@GlennThrush: No one plays a winning hand worse than Trump.

@danmericaCNN: Clinton on NBC on why gun legislation never goes anywhere: "It is not complicated. The gun lobby scares the heck out of elected officials."

@amandacarpenter: Trump, conspiracist, says Obama might have something else on his mind. Clinton calls Trump a ISIS recruiting tool. Both so bad at this!!!