The original post addresses 'Can POTUS adjourn Congress?' with a legal precedent, Anon.
"The Adjournment Clause says that the president “may, on extraordinary Occasions, convene both Houses, or either of them, and in case of Disagreement between them, with Respect to the Time of Adjournment, he may adjourn them to such Time as he shall think proper.”
"In his majority opinion, Justice Stephen Breyer cited the Adjournment Clause as the provision in the Constitution that “gives the President (if he has enough allies in Congress) a way to force a recess.”