Democratic vice presidential candidate Tim Kaine attacked Donald Trump of making an issue out of “phantom sanctuary cities,” and said he believes local law enforcement does a better job policing communities than Trump would do.

“When Donald Trump kind of goes after these phantom sanctuary cities and talks about how bad they are, basically what he’s going after is police chiefs,” Kaine said on CNN. “And I trust police chiefs in terms of knowing what should be done to keep their communities safer and police departments and mayors a lot more than I trust Donald Trump.”