License Plate KANSAS in California, United States

Blocked Driveway & Illegal Parking at Intersection Of Vermont St & 26th St. vehicle with license plate CA KANSAS Rv registered in kansas has been parked on this block of vermont for 1 month. street sweeping starts at midnight. they leave lots of trash on the street. why are they exempt from parking rules residents have to follow? street sweeping and 72 hr limit. it's time for them to move on