Unconstitutional. Al appropriations originate in the HOR. He needs to reconvene congress to get this done. If they refuse, then arrest the speaker and McConnell. This would be legal since they are not in session.
Nonsense. Go read the Stafford Act. This was authorized long ago by Congress.
“...appropriations originate in the HOR...”
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No.
You are wrong.
The Constitution says bills for raising revenue must originate in the House.