During Immigration and Customs Enforcement (ICE aka La Migra) raids (from SAJE): 

• Stay calm. 
• Do not open your door. 
• You have the right to remain silent. 
• ICE is not allowed in private spaces without warrants signed by a judge. 
• Do not sign anything until you speak with a lawyer. 
• Document the time, location and what happened.

The below Newsweek video explains your rights if ICE comes to your door: