We don't have a shortage, we have plenty of people out of work and underemployed because wages are stagnant from the glut of illegals and imported labor.
The problem isn't that we don't have enough laborers, the problem as the GOP sees it is not having enough nearly free labor.. you know, the kind of people that really don't deserve the fruit of their own labor as much as the bosses that would employ them illegally.. Throw away people in other words.. kinda like slaves but with some freedom..
The true throw-away people are those who have been aborted...and I believe there is a tie, both ideolgically and physically between the two...and many more of our ills.
It isn't even the labor. It's the votes. They see 11million potential voters and don't want to have them AND their legal resident families and those who share their heritage to become another 98% Democrat voting block.
Democrats have no problems with employing these people below minimum wage either. Look at the Clinton appointees who harbored illegal immigrants to work in their homes.