Earlier quoted context omitted.
What if you were just passing through and they hit you with a bullshit charge, the fine for which is "give us your gun?" That's the way these laws often work. They snag people who don't live in the area and don't have the resources to fight them in court (especially if you seize their money).
Which is why either they have enough to arrest you, enough to get a warrant, or they don't take your property.
"There have been 61,998 cash seizures made on highways and elsewhere since 9/11 without search warrants or indictments through the Equitable Sharing Program, totaling more than $2.5 billion. State and local authorities kept more than $1.7 billion of that while Justice, Homeland Security and other federal agencies received $800 million. Half of the seizures were below $8,800."
http://www.washingtonpost.com/sf/investigative/2014/09/06/st...