Presidential debate moderator Lester Holt asked Hillary Clinton about her private email server scandal on Monday evening.

“I made a mistake by using private email. If I had to do over again, I’d obviously do it differently,” Clinton said.

“I take responsibility for that.”

Donald Trump disagreed that the scandal was not worthy of a simple apology:

“That was more than a mistake. That was done purposely,” he said.

Trump criticized Clinton for “half of her staff” taking the Fifth Amendment, including those involved with her private server’s maintenance.

“I will release my tax returns against my lawyer’s wishes, as soon as she releases her 30,000 emails,” he said.

“It’s disgraceful,” he said.