Man there is so much MIS-INFORMATION along with a healthy dose of PARANOIA and flat out IGNORANCE ..
You got a delievery card on your door - you know what, thats a sure sign of one thing - YOU WERE NOT HOME WHE NTHEY ATTEMPTED DELIEVERY SO YOU MUST GO TO THE POST OFFICE AND PICKUP YOUR PACKAGE!
Have you never actually had anything shipped to you via this new service offered by the government, it's parcel post, they actually deliever packages to your residence, well, if you're not home then they couldn't jsut leave the package at your door as long as it's sent with delievery confirmation, registered, etc - someone has to sign for it so they must have you cruise down to the post office for that reason...
Now I know that you might think there is a fully assembeled SWAT team down at ye local post office - sorry, this isn't the case.. you're not smuggling legs of heroin into the US, it's not like they just poped a container with 11,000 pounds of cocaine addressed to you, no, we are talking about a small amount of some C-IV drugs, these are sold with about as much control as chewable vitamins in many countries ..
So go to the post office and sign for your package, you're not going to get arrested .. I alwyas loved comming home to find those little cards because it means the fucking things were delievered and not siezed by customs!