[PA Engineer]

It is not up to them.

U.S. Constitution - Article 2 Section 3

Article 2 - The Executive Branch
Section 3 - State of the Union, Convening Congress

He shall from time to time give to the Congress Information of the State of the Union, and recommend to their Consideration such Measures as he shall judge necessary and expedient; he 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; he shall receive Ambassadors and other public Ministers; he shall take Care that the Laws be faithfully executed, and shall Commission all the Officers of the United States.

[Pravious]

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;

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Well, okay. Let him tell Nancy he’s adjourning the House until 2020.
If she doesn’t like it, let her argue with the Constitution.