Trumps Says Block On Migration Ban Has Put U.S. In Peril

Donald Trump says judges who have blocked his migration ban from 7 mostly Muslim countries are putting the US in peril.

The case is expected to continue today, with an afternoon deadline for both parties to submit their arguments.

The President has tweeted that it's making the job of Homeland Security "very difficult".

He's told Fox News that the travel ban had been working effectively:

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