Executive summary: Perez is a nasty piece of work.
I didn't tell the half of it. Here is a much longer and more thorough article about Perez that Carl Horowitz published at the National Legal and Policy Center back when President Obama nominated Perez for Labor Secretary four years ago.
It amply confirms my belief that Perez is a clever, ruthless, and relentless enemy of the U.S.A. as understood by National Conservatives. Thanks to Carl for passing that on to me.