They know who sent it and the guy is a fellow conservative. Rush has to be careful on opening any package hence his security team x-ray's everything.
Guy should have sent a letter first describing what was arriving.
It is good that Rush has a scanner to inspect such packages. Not only do leftists hate him, but some who call themselves “Conservatives” dislike him for his outspokenness.
On the other hand, I LOVE him, and would hate to see him harmed.