It would seem to me that blocking access of a government official on official government business is a federal crime.
Yes! You are correct!
It’s called SEDITION!
https://www.law.cornell.edu/uscode/text/18/2384
https://en.wikipedia.org/wiki/Seditious_conspiracy
It is a crime. No one has the right to deny someone access to where they want to go that is open to the public. She should require a cop be on hand where ever she goes and have people locked up. Time to get tough and enforce laws.