US President Barack Obama said that mass killings like the weekend shooting rampage at a Sikh temple in Wisconsin were happening with "too much regularity" and should prompt soul searching by all Americans on ways to reduce gun violence.
The lone suspect in a mass shooting at a spa in suburban Milwaukee, Wisconsin, has been found dead from a self-inflicted gunshot wound at the scene, Brookfield police said.
Mitt Romney made a leap toward winning the Republican presidential nomination with a clean sweep of Wisconsin and two other primaries that handed a heavy defeat to main rival Rick Santorum.
Wisconsin Governor Scott Walker will survive a recall election forced by opponents of a law he championed restricting the collective bargaining of unionized government workers, television networks NBC, CNN and CBS projected.
Mitt Romney made a campaign stop with Governor Scott Walker in Wisconsin and said Americans can "learn a lot" from the Republican who survived a Democratic recall effort two weeks ago.
Up to 100,000 people protested at the Wisconsin state Capitol against a new law curbing the union rights of public workers that is seen as one of the biggest challenges in decades facing US organized labour.
A US judge temporarily blocked a controversial new law in Wisconsin that strips public employee unions of key collective bargaining rights.
Wisconsin suspended enforcement of a new law reducing public sector union powers yesterday after a judge ruled it had not taken effect, while Ohio enacted a similar measure curbing collective bargaining by state employees.
Thousands of people rallied in cities across the United States against a Wisconsin plan to curb the power of public sector unions that has sparked similar government efforts in other states.
Republicans in the Wisconsin state Senate approved Governor Scott Walker's plan to curb the rights of public-sector unions, stripping out the parts that required the presence of their 14 absent Democratic colleagues.
Wisconsin's governor signed into law sweeping limits on collective bargaining rights for public sector workers that have ignited a national debate over unions as other states weigh similar curbs.