I would have my doubts it was unintentional.
Union thugs have their own agenda.
Obama always has a planned crowd behind him for every damn announcement. He most likely will have a number of illegals from all the Latin American countries plus Mexicans out the -—. This pile of sheep dip and his hate America wife are clearly trying to destroy this country with everything they do.
What a coincidence that this happened right after the Keystone vote failed.