Ron Cohen, the Republican facing Rep. Ro Khanna in the 17th Congressional District this November, apologized for a series of tweets he posted last week suggesting former First Lady Michelle Obama was transgender.

During a debate Saturday morning in Fremont, Cohen expressed remorse for the tweets he exchanged with a South Bay progressive. He later deleted the offending messages.

Khanna responded to Cohen by applauding the apology, and saying that he too has regretted a few of his own tweets, and added, “but not as bad as yours.”

After the tweets were reported by San Jose Inside, the issue along with some of Cohen’s past thoughts on 9/11 caught the eye of some mainstream media outlets.