> USA's highest tax state?

That is another myth that is floating around the US. CA actually has progressive tax brackets (i.e. the rate changes quite a bit from bracket to bracket) and only few get into the top state brackets, whereas most of the other states that have income tax, >90% of people are in the top bracket as the top bracket is around $10k (looking at https://tax.idaho.gov/i-1110.cfm).