In an extraordinary escalation of the Trump administration's confrontation with Democratic leaders, the Department of Justice has launched a criminal investigation into Minnesota Governor Tim Walz and Minneapolis Mayor Jacob Frey, according to CBS News .
Code § 372, "Conspiracy to impede or injure officer," CNN reports .
Paul the largest operation in its history.
A second shooting incident occurred Wednesday when a federal agent shot a man in the leg, intensifying tensions between federal authorities and local communities.
The Trump administration's Justice Department has issued grand jury subpoenas to Minnesota's governor and Minneapolis' mayor, investigating whether they conspired to impede federal immigration agents.