U.S. District Judge Tanya Chutkan did not mention or make any remarks on Monday about the Supreme Court’s presidential immunity ruling during her first public hearing since the justices sent Trump’s Jan. 6 case back to her.

At one point during a status hearing for a Jan. 6 defendant, when Judge Chutkan was asked about a trial date, she said "my calendar is…" as she made a face and laughed.

-ABC News' Laura Romero

The heads of the Republican National Committee and Democratic National Committee both released statements following the Supreme Court's immunity ruling.

RNC chair Michael Whatley said "today's ruling is a victory for the rule of law and a reminder that the Constitution outweighs the left's weaponization of the judicial system against President Trump and his allies."

DNC Chair Jamie Harrison, however, argued the "ruling only underscores the stakes of this election," in light of Trump's repeated threats against his opponents.

"The only thing standing between Donald Trump and his threats to our democracy is President Biden -- and the American people will stand once again on the side of democracy this November," he said.

Shortly after the Supreme Court ruled Monday on Trump's immunity case, the Biden reelection campaign organized a group of surrogates on a press call to lambast the decision that makes the former president immune from federal prosecution for official actions he took while in office.

The group included Capitol police officer Harry Dunn, New York Rep. Dan Goldman and Texas Rep. Jasmine Crockett. The group criticized the Republican-majority Supreme Court for giving the former president "untethered political power," or freedom to act as a "dictator."

"I do think that it was extremely scary," said principal deputy campaign manager Quentin Fulks, who led the call. "So what happens if there's an election outcome [or] result that Trump doesn't like in a Senate race, or governor's race or House race?"

The campaign said that Biden would be out on the campaign trail to highlight the threat that Trump poses to democracy following this decision.

"The Supreme Court just handed Donald Trump three keys to absolute immunity as president of the United States and so we're going to continue to point out to voters," Fulks said. "When Trump says these things, now he will have the ability to do them if he is the president or reelected president of the United States, and we have to do everything in our power to stop."

Fulks diverted attention from a question about Biden's debate performance, saying the Supreme Court's decision was a "reality check" in the face of debate night.

"Now until November, we're going to continue taking this case directly to voters who are going to decide this election," he said.

-ABC News' Isabella Murray

Several Republicans and Democrats on Capitol Hill spoke out about the Supreme Court's ruling on presidential immunity.

Many GOP members of Congress lauded the decision and said it was a victory for former President Donald Trump. Meanwhile, many Democrats on the Hill said it sets a dangerous precedent.

Speaker Mike Johnson said the decision marks "another defeat for President [Joe] Biden’s weaponized Department of Justice and Jack Smith."

"As President Trump has repeatedly said, the American people, not President Biden’s bureaucrats, will decide the November 5th election," Johnson said in a statement.

House Minority Leader Hakeem Jeffries said in a statement that the immunity SCOTUS decision “sets a dangerous precedent for the future of our nation.”

“House Democrats will engage in aggressive oversight and legislative activity with respect to the Supreme Court to ensure that the extreme, far-right justices in the majority are brought into compliance with the Constitution,” he said.

Senate Majority Leader Chuck Schumer said in a series of statements on X that the ruling was a "disgraceful decision by the MAGA SCOTUS."

"The very basis of our judicial system is that no one is above the law. Treason or incitement of an insurrection should not be considered a core constitutional power afforded to a president," he said.

Sen. Marsha Blackburn, R-Tenn., said on a post on X that the ruling "upholds the rule of law in our country and rebukes Democrats’ blatant attempts to weaponize our legal system against Donald Trump."

"Time and time again, Americans have watched the Biden administration do everything in its power to take down President Trump, but this partisan attack will not stand in America," she said.

When the justices appeared open to the idea of some level of immunity for former presidents, it was a shock for many veteran court observers.

"It was surprising to hear, at least from some of the justices, the possibility that a president could somehow commit criminal misconduct for which they could never be held liable in court," said constitutional law expert Michael Gerhardt. "I think that has struck many people as just, up until now, inconceivable."

One point that stood out to Gerhardt was when Justice Elena Kagan pressed Trump attorney John Sauer if a president could order the military to stage a coup and be immune. Sauer said, in their view, a president could.

"The answer that she got was one of the most disturbing I've ever heard at the Supreme Court," he said.

Read more about reaction to the April arguments here.