Maybe they are legal. Do you know?
No, and that is precisely my point: THEY SHOULD BE VERIFYING! If a "New Iowan" comes in for help learning English or acquiring some new skill, he/she should be willing and able to provide proof of legal residency. The Center should then verify that proof. Sencillo, ¿no?
"Maybe" doesn't cut it. They must be screened to make certain they're legal. Comprende'?