William Barr, pictured during a meeting on Capitol Hill on January 9, has been confirmed as the next attorney general of the United States. He would replace acting Attorney General Matthew Whitaker, who was tapped to replace former attorney general Jeff Sessions ousted by President Donald Trump in November.
When grilled by senators over whether he would protect the investigation, Mr Barr said Mr Mueller must be allowed to complete the probe and that he believes Russians "interfered or attempted to interfere in the election and we have to get to the bottom of it".
Barr will face a new landscape of challenges in his second turn at Justice, including foreign threats and cyber crimes that were not on the department's radar, or even physical possibilities, in the early 1990s.
"Mr. Barr's views about the power of the president are especially troubling in light of his refusal to commit to making the special counsel's findings and the report publicly available", said California Sen.
Barr was sworn in by Chief Justice John Roberts in the Oval Office on February 14, just hours after the Senate vote.
Now the newly-appointed Attorney General will have to name his deputy and also address the investigation being conducted by Special Counsel Robert Mueller, which he had previously criticised.
As the country's chief law enforcement officer, Barr will oversee the remaining work in Mueller's investigation of potential co-ordination between the Kremlin and the Trump campaign.
Trump abruptly removed Comey amid rising tension over the Federal Bureau of Investigation probe.
According to CNN's sources, Barr has not made any decisions yet about what he will do with Mueller's report once the probe is finished, but has told lawmakers that he is in "favor of as much transparency as there as can be, consistent with the rules and the law", not quite revealing whether he would give Congress the full report.
Barr is widely expected to back many of Trump's tough immigration policies.
Graham said Barr stood out "head and shoulders" above others who could have been nominated. Republican Sen. Rand Paul of SC voted against him, citing concerns about Barr's views on surveillance, among other issues.