US media reports say President Trump’s new Department of Government Efficiency (DOGE) was sued multiple times before his inauguration ceremony in the Capitol Rotunda concluded.

The Hill reports that in the moments after Trump’s swearing-in, three lawsuits were filed in D.C.’s federal district court alleging DOGE doesn’t comply with the Federal Advisory Committee Act (FACA).

The cases were led by progressive consumer watchdog Public Citizen, the American Public Health Association and National Security Counselors, a public interest law firm.  They reportedly seek to block co-heads Elon Musk and Vivek Ramaswamy from moving forward or coordinating with the new administration.

Musk and Ramaswamy have pledged ambitious plans to cut US$2 trillion in government spending and restructure federal agencies, though Ramaswamy is also planning to run for Ohio governor, according to The Hill. 

The three cases were some of the first lawsuits filed against the new Trump administration after the president took the oath of office in the Capitol.

Reuters reports that Democratic-led states and civil rights groups filed a slew of lawsuits challenging U.S. President Donald Trump's bid to roll back birthright citizenship on Tuesday in an early bid by his opponents to block his agenda in court.

As it had been reported earlier, after his inauguration on January 20, Donald Trump ordered U.S. agencies to refuse to recognize the citizenship of children born in the United States if neither their mother or father is a U.S. citizen or legal permanent resident.

The lawsuits reportedly take aim at a central piece of Trump's sweeping immigration crackdown. Reuters cited the office of Massachusetts Attorney General Andrea Joy Campbell as saying that if allowed to stand, Trump's order would for the first time deny more than 150,000 children born annually in the United States the right to citizenship.

"President Trump does not have the authority to take away constitutional rights," she said in a statement.

Losing out on citizenship would prevent those individuals from having access to federal programs like Medicaid health insurance and, when they become older, from working lawfully or voting, the states say.

"Today's immediate lawsuit sends a clear message to the Trump administration that we will stand up for our residents and their basic constitutional rights," New Jersey Attorney General Matthew Platkin said in a statement, according to Reuters.