Former independent counsel Ken Starr says that he has faith in 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, the special counsel investigating the Trump campaign and Russian interference in the 2016 election, but not necessarily in the officials at the Justice Department that are surrounding the probe.

Starr, who led the investigation into former President Clinton's sexual misconduct with Monica Lewinsky, on Monday told Fox News's Tucker Carlson that he was not comfortable with claims that Mueller is “surrounded” by partisan Democrats in the agency.

"No, I'm not," Starr tells Carlson when asked if he was comfortable with the career agents surrounding Mueller. “I have great confidence in Bob Mueller as a person, so I'm in the school that Mueller is a good and decent man.”

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"But I must say ... when there are these kinds of charges or concerns about partisanship, the special counsel needs to respond to those," Starr continues. "I do have concerns about the people around him."

Despite his faith in Mueller, the attorney argues that President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE could still hinder the investigation by simply ordering the Justice Department to not subpoena him.

Starr added during a Tuesday interview with radio host Hugh Hewitt that in his view, Trump has the legal authority to direct Deputy Attorney General Rod Rosenstein Rod RosensteinDOJ kept investigators from completing probe of Trump ties to Russia: report Five takeaways from final Senate Intel Russia report FBI officials hid copies of Russia probe documents fearing Trump interference: book MORE to stop Mueller from issuing a subpoena targeting Trump himself.

"Yes. The president does have that power," Starr said. "He has plenary authority, full authority, over the operations of the executive branch. And so yes, he can do that under the Constitution. Is it wise? No."

Trump's attacks on the special counsel investigation have increased in recent weeks following the guilty verdict in the case of Paul Manafort Paul John ManafortOur Constitution is under attack by Attorney General William Barr Bannon trial date set in alleged border wall scam Conspicuous by their absence from the Republican Convention MORE, his former campaign chairman, on tax and bank fraud charges and the guilty plea of Michael Cohen, his former attorney, to similar charges.

The president called Mueller's investigation a "national disgrace" last month and told reporters that Mueller is "highly conflicted" due to a friendship with fired FBI Director James Comey James Brien ComeyDemocrats fear Russia interference could spoil bid to retake Senate Book: FBI sex crimes investigator helped trigger October 2016 public probe of Clinton emails Trump jabs at FBI director over testimony on Russia, antifa MORE.

Trump has also attacked the credibility of agents working for Mueller, referring to them as "angry Democrats" in numerous tweets.