The Wisconsin Supreme Court is set to decide whether police can legally draw suspected drunken drivers' blood without a warrant or driver consent.
The court said it would hear three drunken driving cases, two of which involved a homicide. That announcement came nearly a year after the U.S. Supreme Court ruled on a Missouri case that could call into question Wisconsin's law.
Wisconsin since 1993 has granted police authority to draw drunken driving suspects' blood without a warrant or consent.
About 5,000 people refused to comply with police tests in 2011 and 2012.
The eventual rulings in the three cases are expected to clarify how law enforcement can gather evidence in some Wisconsin drunken driving cases.