Whooo boy, that statement will bring out the Free Trade Cult foaming at the mouth.
"Guest Worker" programs are an abject failure. They simply invite more illegal immigration (gotta bring the wifey and kids up, ya know?). Employers will hire guest workers over citizens because guest workers can't vote to change their conditions.
In modern America, court mandated political redistricting based on ethnicity uses the Census of illegals and guest workers to gerrymander districts that guarantee someone of like ethnicity to be voted into office (unless you have a Caucasian ethnicity such as Polish, German, Italian, etc, which apparently count for nothing).
So the presence of Guest Workers and their (usually) illegal families skew the politics of the country and strip citizens of their civil rights in the form of proportionate representation (why else would the Sanchez sisters be in the Congress of the United States?).
Guest worker programs are a bad, bad idea that benefit only one group: employers who don't want to play the game by the rules.
No more "Guest Worker" programs, ever. America for Americans.
We haven't HAD a guest worker program in 38 years. We didn't start having a large-scale illegal immigration problem until...38 years ago.
Fancy that. Might they be related?