Sen. Cory Booker, D-N.J., said Sunday that Attorney General Loretta Lynch did "nothing wrong" by meeting with President Bill Clinton last week, and as a "career prosecutor," Lynch knows how to have just a friendly chat with someone even if they have an interest in an ongoing investigation.

"She did nothing wrong — no violation," he said, adding that Clinton is very personable and he believes the two only spoke about personal matters.

"This is about a conversation that the two of them had that had nothing to do with this case," he told CNN Sunday morning. "They talked about golf and grandchildren. It in no way undermined this investigation," he said.

Booker added that Bill Clinton is "probably one of the friendliest people on the planet Earth. "One conversation from a professional prosecutor is going to have no implication on this at all."

Booker said people reading more into their meeting are just "whipping up conspiracy theories" that voters aren't interested in.

"At a time when we've had global terror ... this is the kind of thing that more frustrates voters more than it does interest them," Booker said. "This is a distinction with barely a difference," Booker said about the latest flap over whether Lynch will accept the advice of FBI investigators in the probe into Hillary Clinton's use of a private email server or possibly ignore their recommendation if they determine she should be indicted.

"This is a prosecutor who America can trust, who came up through the ranks and is going to do a good job with this case," Booker said.

Booker wouldn't say what Democrats will do if Clinton is indicted, and said "that is something to me that is not even in the realm of possibility."

Booker is on the campaign's short list for running mates for Clinton. But he declined to answer a question about whether he was being actively vetted by the campaign. "If you have a question like that, please direct it to the Clinton campaign," he said.