Illinois Rep. Louis Lang, D-Skokie, argues medical marijuana legislation while on the House floor during session at the Illinois State Capitol Wednesday, April 17, 2013, in Springfield

 

              Illinois Rep. Louis Lang, D-Skokie, argues medical marijuana legislation while on the House floor during session at the Illinois State Capitol Wednesday, April 17, 2013, in Springfield
Illinois Rep. Louis Lang, D-Skokie, argues medical marijuana legislation while on the House floor during session at the Illinois State Capitol Wednesday, April 17, 2013, in Springfield Ill. (AP Photo/Seth Perlman)