Sen. David Vitter, R-La., and several other Republicans, including presidential candidate Ted Cruz, have introduced a bill in the Senate to punish so-called “sanctuary cities” that violate federal immigration law.

The bill would withhold federal grants, among them “SCAAP grants,” “cops grants” and “community development block grants” to cities that don’t follow the law. The bill charges the secretary of Homeland Security with administrating its mandates.