"Amid an ongoing debate in the U.S. on immigration from Mexico, Gallup estimates 6.2 million Mexican adults say they would like to move permanently to the United States if given the chance. That's close to half of the 14 million Mexicans -- or 19% of the adult population -- who say they would like to resettle somewhere else; would-be migrants in Mexico choose Canada and Spain as their other top desired destinations," the Gallup polling organization said earlier this summer.

"While Gallup's migration findings reflect people's aspirations rather than their intentions, they reveal the desires of potential migrants around the world -- an important consideration for leaders seeking to proactively manage migration and migrant policy in their countries."