Yep, legalized theft. Civil forfeiture works to fleece the peasantry (and the criminals) equally. The DEA and police use this method to fund their organizations, because in most cases, they're allowed to keep most if not all of the money seized. That's an enormous conflict of interest that has caused many innocent people to get shafted by the government, as has been shown here (and elsewhere) in prior stories related to civil forfeiture.

TL;DR: Never travel with cash, gift cards, or cash cards.