Si, Se Puede" may be becoming an over-used Presidential campaign slogan, but the message of "Yes, We Can" still has meaning for members of the Coalition of Immokalee Workers in Florida.

This week, the group launched a national campaign to get Burger King to boost wages and use their economic clout to ensure better treatment of farmworkers:

They've been asking for years but haven't gotten what they want.

So the Coalition of Immokalee Workers is bringing out its big guns: a high-profile, multi-faceted national campaign and the threat of a boycott designed to persuade Burger King to pay a penny more a pound for tomatoes and "eliminate slavery and human rights abuses from Florida's fields."

This week, coalition members are fanning out across the country to gather support for the effort, which is tied to the 200th anniversary of the U.S. ban on the importation of slaves.

The Coalition has a strong track record: using similar tactics, they pressured Yum! Brands -- owners of Taco Bell -- to make similar concessions in 2005. McDonald's followed in 2007.

Burger King's reluctance to join has brought Congressional scrutiny: Sen. Bernie Sanders (I-VT) is promising hearings before the Senate labor commiteee.

For more on the Coalition and the Burger King campaign, visit here.