You elected them to write new laws. They’re letting corporations do it instead.

Each year, state lawmakers across the U.S. introduce thousands of bills dreamed up and written by corporations, industry groups and think tanks.

Disguised as the work of lawmakers, these so-called “model” bills get copied in one state Capitol after another, quietly advancing the agenda of the people who write them.

A two-year investigation by USA TODAY, The Arizona Republic  and the Center for Public Integrity reveals for the first time the extent to which special interests have infiltrated state legislatures using model legislation.

USA TODAY and the Republic found...