Just because a public agent says something was seized from a drug dealer does not make it true, or the process something less than repugnant to the state or federal constitution. This fact is proven out over and over again in our law books.
Then there is the example of weed laws. Only a few short years ago, feds would tromp into the states where they arrested individuals with a few bags of weed, then steal everything they owned (house(s), car(s), tools, business, etc.). They did so under the claim the individual was operating in INTERstate commerce. More often than not, no evidence to that effect could be found in the record of the case.
Bring us, now, to these days when states allow the growing, sale and use of weed, AND the fact the feds still claim weed is illegal, but no longer tromp into a state, unless they have rock solid proof of interstate commerce involving drugs.
Think of it like the gun free zones LGB bragged about getting in place. The U.S. Supreme Court struck those laws down, as never having been laws at all because, as the Court said, "schools have nothing to do with interstate commerece (U.S. v LOPEZ (1995)).