Mike Pence, Kellyanne Conway embolden pro-life crowd at 'March for Life'

WASHINGTON, Jan 27 (Reuters) - Anti-abortion activists gathered in Washington on Friday for the 44th March for Life, buoyed by President Donald Trump's pledge to restrict the procedure and Vice President Mike Pence's address to the marchers.

Organizers expected tens of thousands of supporters to converge on the National Mall for the march, which is held each year close to the anniversary of the U.S. Supreme Court's Roe v. Wade ruling that legalized abortion in 1973.

Vice President Mike Pence, a Republican and longtime hero of the anti-abortion movement, was the most senior government official ever to speak in person at the rally, where he proclaimed that "life is winning in America."

As governor of Indiana, Pence signed what were seen as some of the nation's strictest abortion laws.

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"I've long believed that a society can be judged by how we care for our most vulnerable,"

"Over at 1600 Pennsylvania Avenue, we're in the business of keeping promises," said Pence. "That's why this Congress will work to prevent taxpayer funding of abortion providers."

The vice president also noted both the reinstated Mexico City policy that bans non-governmental funding for abortion program managers, and the administration's goal of putting a conservative Supreme Court replacement for the late Antonin Scalia's seat on the bench.

Senior Trump aide Kellyanne Conway also spoke to marchers, saying it was "a new dawn" for life in America.

SEE ALSO: Donald Trump reinstates 'Mexico City Policy', banning international abortion funding

"A president and a vice president sit at their desks and make decisions for the nation," stated Conway. "As they sit there, they stand here with you."

Rally participants will march from the Mall about 1.5 miles (2 km) to the Supreme Court.

The March for Life comes six days after Washington was flooded by hundreds of thousands of anti-Trump protesters, many of them backers of abortion rights. That protest came a day after Trump was sworn in as president.

Trump has said Roe v. Wade should be overturned and has vowed to appoint an anti-abortion justice to fill the Supreme Court seat left vacant by the death of Justice Antonin Scalia last year.

He also has pledged to defund Planned Parenthood, which draws the ire of many Republicans because it provides abortions, along with other services.

RELATED: Planned Parenthood Protests

In a speech to Republican lawmakers at a retreat in Philadelphia on Thursday, Trump noted that on Monday he reinstated a national policy banning U.S. aid to non-governmental organizations abroad that provide or "promote" abortion.

Trump, who has frequently accused the media of underestimating the crowd at his inauguration, predicted the size of the march crowd would be "300, 400, 500, 600,000 people."

The rally comes as the number of U.S. abortions has fallen to a record low. The Guttmacher Institute, a reproductive health and rights organization, said last week that it dropped below 1 million in 2013 for the first time since 1975.

The drop could be because of improved contraceptive practices as well as restrictive abortion laws, the institute said.

A Pew poll last year showed 57 percent of Americans believe abortion should be legal in all or most cases.

Christina Gregg contributed to this report.