Aug. 20 (UPI) — President Donald Trump has nominated White House aide Dr. Heidi Overton to lead the Food and Drug Administration, drawing anger from Democrats and criticism from a key Republican senator.

Trump announced his nomination of Overton to be the next FDA commissioner on his Truth Social platform Wednesday, calling the deputy director of the White House Domestic Policy Council “a ROCKSTAR in my administration.”

“She is known to take on the HARDEST issues, and bring me solutions that work best for the Country,” Trump said. “We need her leadership at the FDA now to ensure that the U.S. remains the WORLD LEADER for Scientific Discovery and CURES.”

If confirmed by the Senate, Overton will be tasked with overseeing agency policy concerning drugs, vaccines, tobacco products and much of the food supply, among other responsibilities. Kyle Diamantas, a friend of Trump’s son Donald Trump Jr. has been serving as acting FDA commissioner since Marty Makary resigned as head of the agency in May following reported clashes with the Trump administration over its decision to authorize fruit-flavored electronic cigarettes.

“Heidi brings exceptional judgment, professionalism, discipline and an unwavering commitment to the American people,” Department of Health and Human Services Secretary Robert F. Kennedy Jr. said in a statement supporting her nomination to lead the FDA under him.

“I have seen her challenge assumptions, demand excellence and turn bold ideas into meaningful results.”

She has had an increasingly visible presence near the president in recent months and most recently appeared with him earlier this month when he signed an executive order to reduce the number of vaccines recommended for children, which has sparked widespread concern among the medical community.

House Speaker Mike Johnson, R-La., called Overton “a woman of deep faith, an accomplished physician and a champion of the America First agenda” as he congratulated her on the nomination.

“I have seen firsthand her ability to navigate complex policy challenges with conviction and clarity,” he said in a social media statement.

“She will serve our country well.”

While Republicans praised Trump’ pick, Sen. Bill Cassidy, a doctor, broke ranks, saying that while he respected her experience as a physician, “I have strong concerns about her nomination,” citing her lack of managerial experience of a large organization, such as the FDA, which is dealing with staffing and morale issues.

“Additionally, Dr. Overton’s active role in last week’s nonsensical vaccine executive order calls into question her commitment to standing up for sound science and protecting children’s health,” he said online.

“That alone is almost disqualifying.”

Cassidy, who represents Louisiana, will play a key roe in her confirmation as chairman of the Senate Health, Education Labor and Pensions Committee a key vote in whether she is confirmed. Republicans can afford to lose only three votes on the Senate floor, as they only hold a 53-seat majority. The two independent senators caucus with the Democrats, who are all expected to all vote against her nomination.

“Heidi Overton is a far-right, anti-abortion extremist who has no business leading the FDA,” Sen. Patty Murray, D-Wash., said in a statement.

“The American people deserve someone who will put science and facts FIRST, not another Trump sycophant who will make it their mission to attack medication abortion.

“I will vote NO.”

Reproductive health organizations also criticized Trump’s pick, pointing to Overton’s celebration of the overturning of Roe vs. Wade, returning oversight of abortion to the states, as a “huge victory” and to her advocacy for what they described as the politicization of government agencies when she worked at the far-right America First Policy Institute think tank.

“Donald Trump is trying to put an anti-abortion extremist in charge of any agency that could seriously undermine reproductive healthcare — including the agency that could roll back access to mifepristone nationwide,” Reproductive Freedom for All President and CEO Mini Timmaraju said in a statement, referring to a prescription oral medication used to terminate an early pregnancy.

“Her nomination is another alarming step in Trump’s plan to weaponize every part of the federal government to restrict abortion nationwide.”