Under current law in Michigan, it is up to each individual lawmaker to decide whether they have a conflict of interest concerning pending legislation. It's called “self policing” and Representative David LaGrand says it doesn't work.
“To self police is not a good situation because honest folks will come forward and talk about their conflicts and they will have conversations about them. But we don't want to create a situation where people have an active incentive to hide their own self interests.”
Some lawmakers say they want full financial disclosure.