I think the US Postal Service has been compromised by Pelosi. She was more interested in meeting them for discussions than passing covid relief funds.
I don’t dispute that, to clarify though, UPS is the company the package went through. I don’t know whether US Postal was in custody of the package.
Two possibilities to me are, someone recognized the address and person being delivered to and had a grudge, or some Shady FBI or police intervention commanding employees to do something.
I’m leaning towards the employee with a grudge or leftist bias, more than the FBI being that on the ball for a single package.