That states should have the power of civil forfeiture

1.  Civil forfeiture allows a mechanism to keep profits from illegal activity out of circulation

2.  Civil forfeiture is still protected by due process.   To seize property for forfeiture, a warrant is required unless under an exception to the Fourth Amendment.  (plain view or found incidental to a search) in many instances, forfeiture seizures are more limited than their evidentiary counterparts.  18 U.S.C. §981(b)(2) (in money laundering cases, warrantless seizures are authorized during searches incident to arrest, but not in other exigent circumstances).

3.  There are more protections such as iin order to take a house or property, appropriate opportunity and notice must be provided. (United States v. James Daniel Good Property, 114 S. Ct. 492 (1993), The Due Process Clause of the Fifth Amendment requires the government to give property owners more "process" than is due under the Fourth Amendment.

In summary civil forfeiture is an effective mechanism to remove illicit property, for which there are effective due process initiatives to have said property returned if in fact the source or possession was not illegal.