Former U.S. Vice President Mike Pence has been ordered to testify in the investigation against former U.S. President Donald Trump and his alleged efforts to overturn the 2020 election results, as cited by a source familiar with the decision.

NBC News reported that Judge James Boasberg requires Pence to testify before the grand jury tied to the probe led by special counsel Jack Smith. Boasberg is the chief judge of the U.S. District Court for the District of Columbia.

Boasberg's ruling remains under seal as it involves grand jury matters.

Meanwhile, Pence's side has argued that the "speech or debate" clause of the Constitution granted him immunity from testifying.

The said clause can protect lawmakers from being compelled to discuss any legislative activity and grant them immunity from testifying.

The federal judge argued that Pence does have some limited protections, but immunity does not stop him from testifying regarding conversations connected to the alleged illegality on Trump's side.

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Mike Pence To Testify on Donald Trump Probe

The judge said that Pence can still decline to answer questions related to his actions on January 6 while he was serving as president of the Senate for the certification of the 2020 election results. Meanwhile, Pence said his team is "evaluating the court's decision."

In an interview with Newsmax's Greta Van Susteren, Pence said that the requirements of his testimony are a subject of their review, adding that they will have more to say in the coming days, as reported by CNN.

Pence declined to testify before the January 6 House panel investigating the insurrection. However, people in the former president's circle told the committee that there was a "heated phone call" between Pence and him on the day of the attack, wherein Trump threw insults at his vice president.

A former special assistant to Trump, Nicholas Luna, told the January 6 House panel that he remembered Trump calling Pence a "wimp," adding that he remembered Trump saying he made the wrong choice four or five years ago.

Julie Radford, Ivanka Trump's former chief of staff, remembered Ivanka telling her that Trump "just had an upsetting conversation with the vice president."

Donald Trump and 2020 Election Results

Last February, Pence called out Trump, saying that the former president was wrong to say that Pence, as a vice president, had the authority to overturn 2020 election results when Congress met to certify U.S. President Joe Biden's win.

Pence noted that they had no right to overturn the 2020 election, adding that the presidency "belongs to the American people and the American people alone."

Trump has falsely claimed that the 2020 election was stolen against him. His continuous claims of election fraud led a mob of his supporters to breach U.S. Capitol and, at one point, even chanted, "Hang Mike Pence."

Pence described January 6 as "a dark day" in Washington, according to NPR.

The former vice president reiterated that he had no power to change the election results under the Constitution.

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This article is owned by Latin Post.

Written by: Mary Webber

WATCH: Judge orders Pence to testify in Trump probe - from CBS News