At least four federal prosecutors operating out of Minneapolis have resigned out of concerns that the Department is focusing on investigating Renee Good for ties to groups that have been protesting or impeding immigration enforcement efforts in Minneapolis, multiple officials told ABC News Tuesday.

They want guardrails on immigration agents. The issue has risen to the fore ahead of a key Jan. 30 deadline after an ICE officer shot and killed an American woman in Minneapolis.

Former MSNBC host Joy Reid admitted during a Monday interview with podcaster Angela Yee that Renee Nicole Good was part

Rep. Ro Khanna urged support for legislation requiring ICE agents to wear body cameras after Renee Good's fatal shooting. He also called for the ICE agent who shot her to be prosecuted.

The fatal shooting of Renee Good​ by an ICE agent has raised many legal questions. Constitutional law professor David Schultz, who has taught a class on police, criminal and civil procedure, has some answers.

Around 1,000 additional US Customs and Border Protection agents are expected to deploy to Minneapolis, Minnesota, according to two federal law enforcement sources. Follow for live updates.

President Donald Trump vowed "day of reckoning" for Minnesota as more ICE agents head to Minneapolis amid fraud crackdown.

The States at the Core training focuses on monitoring ICE activity and helping the arrested individual by getting their name and contact information. They also provide information about the rights an observer has and what can get them into trouble, like interfering with the arrest and touching officers, and how to de-escalate a situation.