Yes, they do. And yes, the Democrats will defeat it. If the Republican Party ever has a clear majority in the Senate, a Republican president in the White House, and full control of two-thirds of the 50 States, that will very likely be presented. But to date, that hasn't happened. And even if Trump wins today and even if the Republicans hold onto the Senate today, there still will not be even close to two-thirds of the States with Republicans in control. There are political realities. And no, it's not solely up to the US Senate - indeed, it CANNOT amend the Constitution AT ALL.
- Josiah