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Sen. Tim Kaine, D-Va., Hillary Clinton and her husband greet supporters during a campaign rally at East High School on Saturday in Youngstown, Pennsylvania. Getty Images

Democratic presidential candidate Hillary Clinton locked up the nomination last week in Philadelphia. Now she's heading to Omaha, Nebraska.

The former secretary of state was scheduled to speak Monday at 4:30 p.m. local time, which is 5:30 p.m. EDT. She'll be heading to Omaha North High School, where she's scheduled to "discuss her commitment to building an economy that works for everyone, not just those at the top," according to her website. CBS News reported billionaire Warren Buffett will introduce her.

Watch the Clinton event here or below.

Clinton will almost certainly address the latest controversy involving her rival, Republican nominee Donald Trump. Khizr Khan, the dad of late Army Capt. Humayun S.M. Khan, gave a speech at the Democratic National Convention hitting Trump for his divisive rhetoric. With his wife by his side, Khan asked Trump whether he'd read the Constitution, if he'd visited Arlington National Cemetery and what sacrifices he'd made.

Afterward, Trump linked Khan to radical Islamic terrorism, suggested Khan's wife was not allowed to speak on stage and said he has made lots of sacrifices by working very hard. "While I feel deeply for the loss of his son, Mr. Khan who has never met me, has no right to stand in front of millions of people and claim I have never read the Constitution, (which is false) and say many other inaccurate things," Trump said in a statement.

Trump's comments have inspired backlash from GOP leaders ranging from Arizona Sen. John McCain to House Speaker Paul Ryan. Clinton, too, shot back at the nominee.

"Mr. Khan paid the ultimate sacrifice in his family, didn’t he?" Politico reported Clinton told voters this weekend. "And what has he heard from Donald Trump? Nothing but insults and degrading comments about Muslims — a total misunderstanding of what made our country great, religious freedom, religious liberty."

As of Monday afternoon, Clinton had a 2-percentage point lead over Trump in the polls, according to RealClearPolitics.