The term-limited Colorado governor was in Des Moines to lay the groundwork for a possible presidential bid in 2020.
The newly formed nonprofit Public Trust Institute that filed the complaint is led by former Republican House Speaker Frank McNulty, a one-time political adversary of Gov. John Hickenlooper.
The November ballot measure, which would compensate private landowners if government drilling limits diminished their property values, is largely funded by the oil and gas industry.
Candidates Rep. Jared Polis and State Treasurer Walker Stapleton also have competing visions for Colorado's healthcare, education funding and move.
Troyer also told The Denver Post that his office plans to take action soon against a Denver-area chain of marijuana dispensaries.
Colorado Gov. John Hickenlooper said his political action committee will allow him to weigh in on national races, as well as weigh his future.
Despite the announcement, Hickenlooper said his decision on a possible presidential run wouldn’t come until two or three months until he’s out of office.
Sen. Michael Bennet and Gov. John Hickenlooper asked the government to stop plans for oil and gas drilling on habitat for the greater sage grouse.
Amendment 74 would to allow Coloradans to make financial claims if their property is devalued because of government action.
Gov. John Hickenlooper also made it clear he opposes both oil and gas measures that could be on the ballot this November.