President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE's attorney general pick William Barr said Tuesday that while the constitution may allow a president to pardon himself or his family members, the president could be held accountable for abuse of power for doing so.

Sen. Christopher Coons Christopher (Chris) Andrew CoonsBiden promises Democratic senators help in battleground states Shakespeare Theatre Company goes virtual for 'Will on the Hill...or Won't They?' The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep MORE (D-Del.) asked Barr during his nomination hearing if Barr believed that a president has the ability to pardon himself or family members.

Trump and his attorney Rudy Giuliani have both said they believe Trump does have the hypothetical power to pardon himself, while constitutional experts have said the matter is unclear.

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“Yes, he does have the power to pardon a family member, but he would then have to face the fact that he could be held accountable for abusing his power,” Barr answered. “Or if it was connected to some act in violating an obstruction statute, then it could be obstruction.”

When Coons pressed Barr on how a president could be held accountable, the nominee said that individual could face prosecution if a statute was violated.

But if no laws were broken, Barr said the president would be held accountable politically.

Coons also questioned Barr over what he would do if the president attempted to fire federal prosecutors in the Southern District of New York who have charged Trump’s former personal attorney Michael Cohen. Trump has been referenced -- but not by name -- in court filings in Cohen’s case.

Barr said that he doesn’t believe that firing officials necessarily stops an investigation.

However, he said that “if someone tried to stop a bona fide, lawful investigation to cover up wrongdoing, I would resign.”

The president has repeatedly attacked Cohen after his former attorney began cooperating in the investigation. The lawyer has also worked with special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE's probe.

Cohen will testify before lawmakers in February, a move that Trump has also criticized as an attempt "to get [Cohen's] sentence reduced."

Cohen pleaded guilty last year to federal charges, including one count of lying to Congress. In December, he was sentenced to three years in jail.