President Trump has asked his advisers about his power to pardon aides, family members, and even himself in connection with special counsel Robert Mueller's Russia investigation, according to a report Thursday.

The Washington Post said some of Trump's lawyers are discussing the president's authority to grant pardons, and aim to figure out ways to limit or undercut Mueller's investigation of Russia's election interference and possible ties to the Trump campaign.

Trump's legal team declined to comment to the Post, but an adviser to Trump said the president is curious about the extent of his pardoning authority and is not actively considering pardoning himself if any wrongdoing is found.

"This is not in the context of, 'I can't wait to pardon myself,'" the adviser told the Post.

The Post says Trump is frustrated with Mueller's probe because he worries the special counsel can access the president's tax returns. Trump has refused to publicly release his tax returns, much to the chagrin of his critics, breaking with a longstanding tradition for presidents.

The president's legal team is compiling a list of Mueller's alleged conflicts of interests as a way to taint his work, the Post said.

Some of the investigators Mueller has hired to help with the probe have donated to Democrats, including Hillary Clinton, Trump's Democratic opponent in 2016.

Jay Sekulow, one of the president's lawyers, told the Post that Trump is concerned Mueller's probe will become too wide in scope.

"The fact is that the president is concerned about conflicts that exist within the special counsel's office and any changes in the scope of the investigation," Sekulow said. "The scope is going to have to stay within his mandate. If there's drifting, we're going to object."

Bloomberg News reported Thursday that Mueller is reviewing some of Trump's business deals, including with a Russian oligarch who purchased a Palm Beach mansion from Trump for $95 million in 2008.