CHRIS BURY:
Missouri is one of 26 states to preempt local minimum wage ordinances. Another is Alabama, which blocked Birmingham's minimum wage increase last year.
According to Grassroots Change, a national group that tracks preemption, 15 Republican-controlled legislatures — and one with a Democratic majority — have adopted laws since 2010 that ban local requirements for paid sick days. Milwaukee voters approved a referendum for the benefit in 2008, and in 2011 Wisconsin Governor Scott Walker signed into law a measure that preempts it.
Other state preemptions have prevented city regulations on plastic grocery bags, pesticides, e-cigarettes, and sugary drinks.