The term weaponized vehicle has become commonplace at news conferences and in statements released by federal officials during the Trump administration’s immigration crackdown.

Federal authorities initially used that language Monday when talking to state officials about the actions of a Maine driver who was fatally shot by immigration officers. In public statements, Department of Homeland Security officials shifted their description to say officers fired into the vehicle “fearing for public safety.”

It was the second time in a week that federal immigration authorities shot and killed someone behind the wheel of a car, initially accusing the driver of attempting to ram into immigration officers.

But while the weaponization of a car is often used to justify the use of deadly force against a driver, the legal definition is a lot less clear cut.

State legislatures and some courts say cars can be considered weapons