My dad is the same. He arrived illegally in the 70s, got a factory job with pension, got his citizenship, and now supports tighter immigration control.
He ate the fox news propaganda about the caravans and criminality. We troll him by not speaking Spanish to him and demand he speak "American"- he gets so mad when Spanish is not an option at a business.
Same with my Filipino dad who as a chef used hundreds of Mexican workers. When I was in grade school living in south Florida all the Brazilian kids would call all the other South American kids Mexicans.
And you know they're in favor of mass deportations until it impacts their family members that are still undocumented. They just want other people's family to be deported. It's like all those stories that came out about white Trump voters who were upset about their undocumented spouse or their favorite restaurant owner or whoever being deported.
A few years ago i saw a guy on reddit who was hispanic and he signed all his posts with "hispanics for trump"
I was sure that it was a troll or bot or something. For the first time ever i went through a guys comment history because i was sure that when i go a few month back, it's gonna be russian or something. Nope, seemed like a genuine normal ass hispanic dude who hated immigrants