Biden and First Lady Jill Biden left the White House just a few moments ago for the short drive up Pennsylvania Avenue to the U.S. Capitol, where the president will deliver his first State of the Union address tonight.

Biden did not respond to a shouted question asking if Russian President Vladimir Putin has committed war crimes in Ukraine.

-ABC News' Justin Ryan Gomez

Biden tonight will touch on his plan to address crime and make the case for more community-based policing, rather than defunding the police, a White House official told ABC News.

"He'll make clear that the answer is not to defund the police, it’s to put more police -- with better training and more accountability -- out to take back our streets and make our neighborhoods safer," the White House official said. "And he’ll talk about the steps his administration has taken -- and will continue to take -- to advance that accountability and rebuild trust between law enforcement and the communities they serve."

Biden will also call on Congress to address gun violence, and pass "common-sense" gun violence legislation that will save lives, according to the official.

-ABC News' Molly Nagle

The nation's capital has ramped up security ahead of Biden's first State of the Union address tonight.

Up to 700 National Guard troops have been made available to assist local law enforcement, and a controversial inner-perimeter fence once again surrounds the U.S. Capitol.

The U.S. Capitol Police have also been working in tandem with local, state and federal law enforcement agencies on a "security plan to prevent any disruption to the important work of Congress," Capitol Police Chief Tom Manger said in a statement earlier this week.

-ABC News' Noah Minnie

For more live coverage of the State of the Union, head to FiveThirtyEight, which is providing updates on Biden's address as well as the Texas primary election.

"Given the current state of affairs, both foreign and domestic, tonight is a big night for the president," writes FiveThirtyEight politics reporter Alex Samuels.

The president will announce a new "test-to-treat program" for COVID-19 during his State of the Union address tonight, his chief of staff said during an interview on CNN.

"Because we're getting millions of these new Pfizer pills, we'll be able to test people in drugstores, and if they test positive, immediately give them medicine that prevents hospitalization, free of charge," Ron Klain said.

"And so we're taking the next steps to make sure that COVID does not control our lives, that we can get this country closer to being back to normal," he added.

Klain did not give any more details on how the program would work, such as if people would need a prescription.

The Biden administration has purchased 20 million doses of Pfizer's COVID-19 oral therapy, Paxlovid, although the pill is not expected to be widely available until later this spring. The current plan calls for gradually ramping up to 10 million doses by the end of June and another 10 million by the end of September.

-ABC News' Ben Gittleson and Anne Flaherty