Donald Trump would not be the first president to invoke the Insurrection Act, as he has now threatened to do as a way to send U.S. military forces to Minnesota.

President Trump is threatening to invoke a centuries-old law to deploy troops to Minnesota. Here's what to know.

Minnesota has been the center of national attention as demonstrations continue in Minneapolis after a federal immigration officer fatally shot 37-year-old Renee Good last week. On Thursday, Trump threatened to invoke the Insurrection Act and send troops to Minnesota to quell the protests brought on by Good’s death.

Officials denounced the Trump crackdown at an unofficial congressional hearing in Minneapolis. Administration officials have accused local leaders of promoting violence against ICE agents.

President Donald Trump’s threat to invoke the Insurrection Act in Minnesota is unprecedented, experts say, because “none of the criteria have been met.”

Stephen Colbert mocked President Trump for threatening to invoke the Insurrection Act over Minnesotans' ongoing ICE protests.