Rep. Devin Nunes is looking forward to Attorney General William Barr’s testimony next month.

“It probably won’t go very well for the Democrats. Attorney General Barr seems to always have a full handle of all the facts,” Nunes, the top Republican on the House Intelligence Committee, said during a Fox Business interview on Thursday.

The senior Justice Department official will answer lawmakers’ questions when he testifies before the House Judiciary Committee on March 31. His testimony will come weeks after the Justice Department scaled back a sentencing recommendation for former Trump adviser Roger Stone, who was found guilty of witness tampering and lying to Congress.

Democrats also want to question Barr about the decision to withdraw the nomination of former U.S. Attorney Jessie Liu, who had been tapped for a Treasury Department position. Liu oversaw Stone’s prosecution as well as former national security adviser Michael Flynn’s case after he was charged with lying to the FBI. President Trump has attacked the Justice Department’s handling of both cases.

In addition, Democrats are likely to press Barr on the process the Justice Department created for Trump’s personal lawyer Rudy Giuliani to hand over information he claims he has obtained on corruption allegations against Joe Biden and his son Hunter Biden, who worked for a Ukrainian energy company while his father was in office.

Nunes argued that Barr has nothing to worry about because the Justice Department has done nothing wrong.

“The bottom line is, is that it won’t go well here for the Democrats in the House with Attorney General Barr because he is a man of action and has had a great, long career and has been trying to clean up the mess that the dirty cops made in conjunction with the Democrats. It’s only what happens in a second- and third-world country. Attorney General Barr is the man that’s trying to come in and clean it up,” Nunes claimed.

[Read more: ‘Cannot allow this miscarriage of justice!’: Trump condemns Justice Department seeking up to nine years for Roger Stone]