The challenge argues a 1993 amendment bans state lawmakers from authorizing new forms of gambling, and the sports betting law only benefits members of tribal nations. Get a daily rundown of the Milwaukee storiesThe online sports betting law was supported by Wisconsin tribal nations and strongly opposed by some of the biggest online sports betting companies in the nation, like DraftKings and FanDuel. Democrats argued online betting was already happening in Wisconsin and the law gave the state and tribes input. The case, filed in Waukesha County Circuit Court, asks a judge to declare the sports betting law unconstitutional and block any future attempts to amend gaming compacts to include sports betting. Conservative groups sue to stop online sports betting in Wisconsin was originally published by Wisconsin Public Radio.