Rep. Scott Peters endorsed Mike Bloomberg for president on Monday, citing his plans to fight climate change and spiraling gun deaths and holding him up as having the best chance to defeat President Donald Trump.

Peters, a California Democrat who will serve as national chair for Bloomberg’s climate, energy and environment council, is the fifth House member to sign on with the former New York mayor’s presidential campaign in recent days.

“I thought about it a lot, and the thing that convinced me Mike Bloomberg is the right candidate is that we don’t have to guess who he is: We know he’s a successful business executive, a successful mayor and we know through his philanthropy what he cares about — and that matches my values,” Peters told POLITICO, in announcing his decision. “Whether it’s guns, or climate or economic injustice, I just have a lot of confidence that this is a person who is up to the task on the big issues that face the country.”

In the interview, Peters added that electability — a central pillar of Bloomberg’s late-starting campaign — also contributed to his decision to endorse a candidate a week before the rest of the Democrats compete in the Iowa caucuses.