"I would say the pot calling the kettle black is not something that we should do", Johnson said. "I don't know what members, if any, have had any problems with substance abuse, been busted in DUI, I don't know".
Gaetz was arrested for DUI before being elected to Congress.
"I know my son's character", she said.
At Thursday's hearing, Gaetz read from a profile in the New Yorker magazine in which Hunter Biden described buying crack cocaine and damaging a rental auto. But if I did, I wouldn't raise it against anyone on this committee. I don't think it's proper.
Gaetz harped on the Biden's drug use after introducing an amendment that tweaked the language in the articles pertaining to Trump's demands that Ukraine investigate the Bidens.
Following the hearing, while a spokesperson for Johnson said the Georgia congressman's comments speak for themselves, Gaetz reportedly told CNN, "I didn't pay much attention to it [the comments]".
Then, the Florida congressman questioned how Burisma could have had a legitimate reason for putting Hunter Biden on its board, considering "a crack pipe" and "a plastic bag containing white powdery substance" were found in a Hertz rental vehicle he once drove.
Gaetz was arrested for suspected drunk driving in 2008 after he was pulled over for speeding when driving home from a Florida nightclub in a BMW registered to his father, a state senator. The arresting officer smelled alcohol, and Gaetz refused to take a field sobriety test and a Breathalyzer. "And that is sort of something that we all live with".