Final voting for the Academy Awards begins Friday and ends Feb. 19.

Biden has been working on mental-health issues as part of the administration's effort to reduce gun violence.

Russell, meanwhile, was on Capital Hill on Thursday to join a bipartisan group of senators in unveiling a mental-health bill that would strengthen treatment options at the community level.

And Cooper was in Washington last week for a press conference to bring attention to mental-health issues. He also visited patients at Walter Reed Army Medical Center.

He said at the time: “If I can do one thing, it is to raise awareness, because I was ignorant before I did this movie.”

Bradley and Russell are the latest line of celebrities stopping in Washington during the Oscar campaign season. "Lincoln" director Steven Spielberg and star Daniel Day-Lewis joined Senate Majority Leader Harry ReidHarry Mason ReidMcConnell not yet ready to change rules for Trump nominees The Hill's Morning Report — Sponsored by CVS Health — Trump’s love-hate relationship with the Senate Trump to press GOP on changing Senate rules MORE (D-Nev.) and the senators for a screening at the Capital.