It's honestly besides the point. For even if I accept their sovereignty, they have exercised their sovereign will in the Electoral College to elect this administration. And they always have the power to impeach it through their representatives, the administration did not take that away, nor did they suspend the Congress, nor do they appear to be preparing to wrongfully influence the next elections. A state can not go and rebel against the Union because it disagrees with the current administration. Hell, the Union can literally change the Constitution against the will of a particular state if enough other states agree. You can consider states sovereign if you want, and I concede that it's an established tradition, but when the whole agreement on the separation of powers can be changed with a particular state voting against it - that's a mockery of sovereignty of that state.