President Trump will be the first sitting U.S. president to directly address the March for Life anti-abortion rally in Washington.

He will speak live via satellite from the White House Rose Garden on Friday.

Previous presidents like Ronald Reagan and George W. Bush addressed the march via phone call or recorded message.

Vice President Mike Pence spoke to the massive crowd of protesters last year.

At a march-related event on Thursday, Pence called Trump “the most pro-life president in American history,” even though decades earlier, Trump previously identified himself as “very pro-choice.”

You can watch President Trump’s March for Life speech live in the player above.