(CNN) — Texas National Guard troops are expected to leave Chicago and return to their home state very soon, a source familiar with the planning told CNN, after weeks in limbo as a court battle played out over the legality of their deployment.

Specific timing is unclear but preparations are now underway for their redeployment, the source said.

Two hundred federalized troops had arrived in the city over a month ago with a mission from the Trump administration to protect Immigration and Customs Enforcement and other US Government personnel – but instead stayed waiting at training bases for weeks.

The deployment was halted by a federal judge who said there was no justification to bring in the military. And the Supreme Court took the rare step of asking for additional briefing in that h

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