United States Constitution, Article III Section 3 delineates treason as follows:
"Treason against the United States, shall consist only in levying War against them, or in adhering to their Enemies, giving them Aid and Comfort."
Firing upon federal troops was encouraged by state governments such as South Carolina....southern states DID commit treason.
Again, States don't engage in treason, see previous post. States don't engage in rebellion, either. That's why Lincoln dreamt up the whole rebellions within SC, NC, VA, etc., gobbledygook. What part of The People of a State (9th Amendment) speak as one voice through their State (10th Amendment) do you not grasp? And again, the USSC affixed the opening of the war on Lincoln.