修宪需要2/3的参议院同意，就算voting along the party line，民主党只是输了majority，又不是没了。
To change the 22nd Amendment, which limits U.S. presidents to two terms, a constitutional amendment would need to be proposed and then ratified. Here’s what that process involves:
Proposal: Either a two-thirds majority in both the House of Representatives and the Senate must approve the proposed amendment, or two-thirds of state legislatures must call for a constitutional convention (though this has never happened).
Ratification: After proposal, the amendment must be ratified by three-fourths of the state legislatures (38 out of 50 states) or by conventions in three-fourths of the states, depending on the method Congress chooses.
This high threshold makes changing an amendment very challenging, especially one as significant as the 22nd Amendment. The last successful constitutional amendment (the 27th) took over 200 years from proposal to ratification!
