Question - Is local law enforcement required to arrest someone if they are observed committing a FEDERAL crime?
You bet, fail to pay a parking ticket infraction, or be a few days late and Americans go to jail, while the police turn their backs and wink at the millions upon millions of illegal aliens that have craped on our sovereignty, spit on our laws, while choking off our social services as they reproduce as fast as possible.
If this immigration disaster continues, we will lose our country. No question.