At least in New York:
"A person is guilty of criminal mischief in the second degree when with
intent to damage property of another person, and having no right to do
so nor any reasonable ground to believe that he has such right, he
damages property of another person in an amount exceeding one thousand
five hundred dollars.
Criminal mischief in the second degree is a class D felony."
https://www.nysenate.gov/legislation/laws/PEN/145.10
Class D non-violent felonies are worth up to seven years in prison, likely varying widely depending on the circumstances.
I guess most states probably have similar statutes on the books. Whether you could get a prosecutor to charge it probably depends on the exact circumstances. I reckon you could find cases of people being charged on much less than $1M in intentional damage, though.