(CNN) White House senior adviser Jared Kushner swiped back at Joe Biden after the former vice president said it was "improper" for Kushner and his wife Ivanka Trump to serve as top White House officials.

"He's entitled to his opinion, but a lot of the work that the President's had me doing over the last three years has actually been cleaning up the messes that Vice President Biden left behind," Kushner said i n an interview with Israel Channel 13's Barak Ravid released on Tuesday.

Kushner specifically pointed to criminal justice reform, which the Trump administration passed.

"(It) rolled back a lot of the very harsh laws that were created and partially written by Vice President Biden over 20 years ago, which put a lot of African Americans in prison and really destroyed a generation and did a lot of harm to our country," Kushner said.

Kushner dismissed the charge that it's improper for him to work for his father-in-law in the White House.

"Look, he has his opinion. I think President Trump is entitled to pick his team and you know we've worked with him for a long time and I think we've done a good job of trying to help him be successful," Kushner added.

The interview came during a trip Kushner made to Israel, where he met with Israeli Prime Minister Benjamin Netanyahu and his political rival, retired Gen. Benny Gantz.

Kushner, who has only sparingly weighed in publicly on political matters, also weighed in on Democrats' moves toward impeachment, slamming the effort as "silly games" and insisting that Trump "hasn't done anything wrong."

Kushner also argued that "the American people are sick and tired" of the continuous stream of investigations and insisted that Trump's "record of accomplishments is unimpeachable."

"They've been trying to impeach the President for the last three years or get him out of office and they have been unsuccessful at that. The best thing going for the President is that he hasn't done anything wrong," Kushner said.

He said Democrats have "investigated him over and over and over again and I think the American people are sick and tired of it."

Kushner has not talked extensively about the impeachment matter. His wife, Ivanka Trump, told Fox News earlier this month the President would prioritize his governing agenda while the impeachment process proceeds.

Kushner struck a similar note in the interview in Israel.

"If in Congress, if they want to be part of the work we're doing to try to make the country stronger and the country more prosperous, we welcome them to join us," he said. "If they want to play silly games, we'll obviously deal with that in an appropriate manner. But we're not going to let that distract us as an administration."