CHICAGO (WLS) -- The Supreme Court on Wednesday indicated that it is not yet prepared to rule on an interim basis over whether President Donald Trump has legal authority to deploy members of the National Guard to protect federal property and personnel in Chicago.

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In an unsigned order, the Court asked attorneys both for the Trump administration and State of Illinois to address the meaning of the term "regular forces" in a federal law outlining when the president can federalize the Guard.

Section 12406 of the US code says a president may deploy the Guard when he is "unable with the regular forces to execute the laws of the United States."

The law does not specify what that means.

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