“Any of the states can legally secede from the union.
Successfully resisting the inevitable military attempt to return the state to the union is another matter, however.”
Pish...
The present day U.S. government wouldn’t do anything but issue a string of strongly worded letters to any state that elected to secede.
>>Any of the states can legally secede from the union.<<
I repeat: Under current federal law no State may legally secede.