Democratic Sen. Brian Schatz puts a hold on Trump's State Department nominees

WASHINGTON — Sen. Brian Schatz, D-Hawaii, said Monday he’s placing a “blanket hold” on President Donald Trump’s nominees for the State Department, tamping down his hopes of quickly installing personnel in key positions.

Schatz, who is on the Foreign Relations Committee, said his move is in protest of Trump’s billionaire adviser Elon Musk’s declaring that he and Trump will shut down the U.S. Agency for International Development

“Dismantling USAID is illegal and makes us less safe. USAID was created by federal law and is funded by Congress. Donald Trump and Elon Musk can’t just wish it away with a stroke of a pen — they need to pass a law,” Schatz said in a statement.

“Until and unless this brazenly authoritarian action is reversed and USAID is functional again, I will be placing a blanket hold on all of the Trump administration’s State Department nominees,” he continued. “This is self-inflicted chaos of epic proportions that will have dangerous consequences all around the world.”

A “hold” is essentially a threat to prevent a speedy vote for a nominee in the full Senate. It forces Republicans to jump through hoops and burn floor time to confirm nominees, which adds up when there are many lower-level nominees who might otherwise get fast-tracked to the floor for votes.

Nominees require majorities to be confirmed in the Senate. Republicans have 53 senators, so Democrats cannot scuttle Trump’s picks on their own. But they can drag out the process and detract from other nominees or bills that GOP leaders prefer to spend time on.

Secretary of State Marco Rubio said Monday he had been named acting administrator of USAID. Although the Senate voted unanimously to confirm Rubio as secretary of state, there are many high-ranking positions underneath him that also require Senate approval.

Democratic lawmakers gathered Monday afternoon to speak outside USAID’s Washington headquarters to blast the “illegal” shutdown, accusing Trump and Musk of circumventing Congress.

“We will use every power that we have at our disposal in the U.S. Senate. My colleagues will do the same thing in the House. This is a constitutional crisis that we are in today,” said Sen. Chris Murphy, D-Conn. “Let’s not pull any punches about why this is happening. Elon Musk makes billions of dollars off of his business with China. And China is cheering at this action today. There is no question that the billionaire class trying to take over our government right now is doing it based on self-interest.”

Republicans extensively used holds on nominees to protest President Joe Biden’s policies over the last four years.

In 2023, Sen. Tommy Tuberville, R-Ala., placed a hold on over 400 military promotions for 10 months in 2023 in protest of the of Defense Department’s abortion travel policy.

Sen. Josh Hawley, R-Mo., briefly placed a blanket hold on civilian nominees for the State Department and the Pentagon in 2021 in protest of the Biden administration’s handling of the military withdrawal from Afghanistan.

And a group of Senate Republicans placed holds on Biden’s nominees, including judicial nominees, in the wake of court cases that were brought against Trump last year.

The Trump administration has yet to formally put forward nominees for many of the vacant ambassadorships and assistant secretary positions that require Senate confirmation. But nominees for several key positions within the State Department are already in the pipeline.

Among them are Elise Stefanik as U.S. ambassador to the United Nations, along with nominees for those positions immediately under Rubio: Christopher Landau for deputy secretary of state, Michael Rigas for deputy secretary of state for management and Adam Boehler for special envoy for hostage affairs.

Veteran career foreign service officers or civil servants are currently the acting leadership in these positions, but they are not able to act with the same authority as those whom the president has tapped. Almost 100 ambassadorships await nominations, according to the American Foreign Service Union, including senior leadership at the U.S. mission to the U.N.

This article was originally published on NBCNews.com