“By requesting work visas, he would be totally within the law!”
Not quite. Those visas are supposed to be for jobs that can’t be filled by citizens, due to a shortage of skilled applicants. If he is using the process to bring in immigrants for jobs which there is NO shortage of American labor to fill (and there is no shortage for cooks, cleaners, waitstaff,etc), then he is abusing the process, which is illegal.
I read an article on FR several months ago with info from the Florida Workforce Commission (or whatever it's called). It stated that Trump does job postings, and most people in FL are not applying for seasonal jobs that pay $9.00 an hour, so he fills the jobs with legal/ visa migrants.
I am more likely to believe the FWC, than MALDEF/LA Raza affiliated dreamers.