If you were right, then Kamala would get a lot less support.
The fact is that the GOP/Trump campaign to hilight criminal aliens does NOT undercut Kamala to her base. Her base is immune to claims about criminal aliens, so making such claims only serves to help Kamala.
Decide what you want to do: help her or undercut her.
P.S. I opposed Kamala before, but after watching the debate I came to loathe her. Unfortunately, she might win unless people like you start doing things that work.