GOP senator interested in why Mueller was 'unhappy'

GOP Sen. John KennedyJohn Neely KennedyMORE (La.) said Wednesday he has "no problem" with special counsel Robert MuellerRobert (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 testifying about his probe into Russia's election interference, saying he wants to know why the special counsel was "unhappy."
"I have no problem if he comes and testifies. It would be very interesting. I'd like to know what he was unhappy about," Kennedy, a member of the Senate Judiciary Committee, told reporters.
Reports have emerged over the past 24 hours indicating that Mueller had expressed frustration to Attorney General William Barr about the attorney general's initial handling of the special counsel's report once it was filed in March.
Mueller twice asked Barr to release the special counsel's own summary of his findings from the 448-page report, according to a letter released Wednesday. Barr had initially summarized Mueller's findings in a four-page letter to Congress on March 24.
Asked about Judiciary Committee Chairman Lindsey GrahamLindsey Olin GrahamRomney blasts Trump's Stone commutation: 'Historic corruption' Lincoln Project offers list of GOP senators who 'protect' Trump in new ad The Hill's Morning Report - Presented by Facebook - Trump backs another T stimulus, urges governors to reopen schools MORE's (R-S.C.) indication Wednesday that he's ready to move on from the Mueller probe, Kennedy said: "He's the chairman, but if you're asking me personally I don't have any problem."
Kennedy's comments came as Barr testified Wednesday before the Judiciary panel about his handling of Mueller's report on his findings from the nearly two-year probe into Russian interference in the 2016 election and potential obstruction of justice.
Graham has indicated that he has no intention of asking Mueller to testify before his panel, and other Republicans have signaled a desire to move on from the Russia probe.
"I appreciate very much what Mr. Mueller did for the country. I have read most of the report. For me, it is over," Graham said as part of his opening statement at Wednesday's hearing.
Sen. Richard BurrRichard Mauze BurrKoch-backed group urges Senate to oppose 'bailouts' of states in new ads Biden campaign adds staff in three battleground states Exclusive investigation on the coronavirus pandemic: Where was Congress? MORE (R-N.C.), the chairman of the Senate Intelligence Committee, also appeared to dismiss calling Mueller before his panel, telling reporters on Tuesday: "What am I going to learn from Bob Mueller?" 
But other GOP senators have signaled they are open to hearing from Mueller about his probe into the 2016 election. 
Sen. Susan CollinsSusan Margaret CollinsMore Republicans should support crisis aid for the Postal Service GOP senators voice confidence over uphill Senate battle Republicans considering an outdoor stadium for Florida convention: report MORE (R-Maine) said last month that "if Mr. Mueller were to testify, it could give the Congress and the American people another opportunity to better understand the facts and conclusions that he reached during his investigation."