Thank you for pointing that out!
I’ll have to look into the ‘48 congressional elections now...
The House should NOT convene IMO. Republicans would benefit politically from calling his bluff. After all they have passed legislation dealing with this and the Dems blocked it in the Senate.
(It’s ‘a political question’ whether this is ‘extraordinary’ so no courts are involved. There is no penalty.)
Two other scenarios:
They don’t recess, just continue the one minute pro-forma meetings.
Two, they recess, he calls a special session, they assemble and promptly vote to adjourn to a date both houses agree on. He appears to have the authority to call them in, but not to keep them there if they can agree on a date. I suppose you could get into an endless cycle of Presidential calls to assemble and Congressional adjournments, though.