President Trump announced his ninth wave of U.S. attorney nominations on Friday, tapping four individuals to serve as federal prosecutors in Nebraska, New Hampshire, Delaware and Oregon.

The president nominated Joseph Kelly, currently the district attorney for Lancaster County in Nebraska; Scott Murray, the district attorney for Merrimack County in New Hampshire; David Weiss, the acting U.S. attorney for Delaware; and Billy Williams, the court-appointed U.S. attorney for Oregon.

The latest slate of nominations comes weeks after Trump faced criticism for nominating a disproportionate number of male U.S. Attorneys (41) versus women (one).

"That is a striking gender gap for one of the most consequential law enforcement roles nationwide," Supreme Court biographer Joan Biskupic wrote in September.

White House officials have moved quickly to find candidates for vacant U.S. attorney slots across the U.S., with more than 50 nominations since the president removed dozens of Obama-appointed U.S. attorneys in March.