Former Virginia congressman Virgil Goode has a Townhall.com column called Immigration is Still a Jobs Issue, in which he says

"While most Americans celebrated Labor Day as a nice occasion to enjoy the end of summer with friends and family, Union bosses and Democratic politicians used the occasion to attack Republicans and Tea Party conservatives. Vice President Biden addressed the AFL CIO in Ohio and said that organized labor is the only group “who can stop the barbarians at the gate.”

Not to be out done, Teamsters President James P. Hoffa. accused the Tea Party of waging a war on workers. After telling the president that the Teamsters “want one thing, jobs, jobs, jobs, jobs, jobs, jobs, jobs, jobs,” he said, “President Obama, this is your army. We are ready to march.”

If any of these labor leaders were serious about “jobs, jobs, jobs, jobs, jobs, jobs, jobs, jobs,” or protecting the middle class, they would speak out against our current immigration policies that allow 8 million illegal aliens in the workforce while issuing over a million green cards a year. But today’s labor leaders are more concerned about following the Democratic Party’s agenda than helping American workers. Accordingly, almost all the major labor unions including the SEIU, AFL-CIO, and Teamsters all support amnesty for illegal aliens."

Goode goes on to mention that traditionally, American labor leaders opposed immigration, as it displaces American workers. See my column  Labor Day Lament: Where Have You Gone, Samuel Gompers, Dennis Kearney, Cesar Chavez, A. Philip Randolph.