Members of the Congressional Black Caucus on Friday urged voters to reject Republican presidential nominee Donald Trump after the billionaire businessman finally acknowledged that President Barack Obama was born in the United States.

“These are howls, these are not whistles,” said Democratic Rep. James E. Clyburn of South Carolina.

Trump declaration on Friday that Obama was born in the United States represented a break with the “birther movement.” But it was not enough to quell critics who said the real estate mogul was doing everything he could to delegitimize the president. Black caucus members encouraged people to go to the polls to keep Trump out of the White House.

“Let’s not give ourselves any chance of being regrettable or regretful,” Clyburn said.

[Poll: Two-Thirds of Trump Backers Think Obama Is Muslim]

Trump had previously spent years casting doubt on Obama’s place of birth, fueling conspiracy theories. The president was born in Hawaii to an American mother and Kenyan father. 

Rep. Bonnie Watson Coleman said Trump’s birther efforts were an attempt to undermine the nation’s first African American president.

“There is an urgency associated with what we’re going to do this November,” the New Jersey Democrat said. “The worst thing that could happen to the future of the United States of America is to kill it in its tracks with this person as president.”