The Michigan legislature has been debating it a lot recently. There are a couple of different stories about it here.
http://www.michigancapitolconfidential.com/pubs/mcc/
Interesting link! From it:
“The report reveals that 86 percent of asset forfeitures during the previous year [in Michigan] were for alleged administrative violations, not criminal offenses.”
Looks like the proposed Michigan law in the link is only about more disclosure.
However, a link in the link says Minnesota has reformed its forfeiture law to require a criminal conviction, like in NC.