"The president is committed to protecting the life of the unborn and he is excited to be part of this historic event," she said.

“Since his first day in office, President Trump has remained steadfast on his campaign promises to the pro-life cause and has actively worked to protect the unborn,” said March for Life President Jeanne Mancini said in a statement.

“Over the past year, the Trump administration has significantly advanced pro-life policy, and it is with great confidence that, under his leadership, we expect to see other pro-life achievements in the years to come."

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Vice President Pence in 2017 became the first sitting vice president to address the event since its founding in 1974. Other sitting presidents have addressed the event via telephone, including Ronald Reagan and George W. Bush.

This report was updated at 2 p.m.