The agent told Ms. Good to get out of her car before she was fatally shot. Legal experts said immigration agents may sometimes, but not always, have the authority to make such commands.
In refusing to let the president deploy National Guard troops in Illinois under an obscure law, the justices may have made him more apt to invoke greater powers.
The agent shot a Venezuelan man who was resisting arrest, an official said. Protesters and law enforcement officers clashed for hours, as city officials urged people to go home.
Ms. Good was killed by an ICE agent last week. Separately, a federal judge put off ruling on a request by the state to block the surge of immigration agents to the Minneapolis area.