You wanted proof of a state petitioning Congress before allowing their people to act and I gave it to you.
...also provide examples of a coup in which a the actions taken were subjected to a popular vote by the entire electorate as was done in Texas?
Saddam Hussein got 100% of the vote. That doesn't mean Saddam was a legitimate leader. The convention-holders grabbed power also.
The voting results of your analogous cases would also be nice, if it is not too much trouble. I wonder if most sovereign people acting in their capacity as citizens of a state in participating in a vote approved their coup by as wide a margin as did the people of Texas.
You can't beat 100% as in Iraq. That doesn't make Saddam's rule right and it doesn't make those who grabbed power at that convention right. It's what Article IV is for, to prevent these Saddam Hussein incidents in our own land.