This is another garbage issue dreamed up by the Commies and the Organize For Action--the President has the power to remove Berman and I think he may have done so before he left DC for Tulsa.
There may be uncertainty about a replacement--if the Court thinks it has the power and appoints a replacement, Trump removes the replacement and continues to do so until either the Court gives him someone he wants or he gets an appointment of his choice confirmed. Either way, Trump can lock down the US Attorney's office until he gets control which is the intent of the statute.
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Check out # 20.
Thanks, David.