[citation needed] Colbeck was employed by Boeing as a Senior Design Engineer responsible for components of the Environmental Control and Life Support System and Quest Airlock module for International Space Station.

He also served as the Chairman of the Senate Appropriations Subcommittee for the Department of Military and Veterans Affairs and State Police budgets.

[6] He later had him removed from all committees after Colbeck attended a Right to Life Dinner in the Senate Majority Leader's district.

He was successful regarding the state-based exchange effort but, despite a procedural move that temporarily blocked passage, he was ultimately unsuccessful in stopping Medicaid expansion, which is now referred to as the Healthy Michigan program.

He was also responsible for the passage of legislation to expand school choice and he has been a vocal opponent of the Common Core Standards Initiative.

[15] Senator Curtis Hertel accepted the challenge, and the ensuing debate was moderated by Kyle Melinn of MIRS News Service.

[16] Colbeck has publicly stated that it is his opinion that wireless technology represents the primary environmental issue of the present day.

[17] In December 2018, he hosted a forum in Lansing to discuss the benefits and risks of wireless technology such as smart meters, cell phones and 5G networks.

[19] He was widely criticized in 2018 for his remarks at a public forum featuring former member of the Muslim Brotherhood Kamal Saleem and former Department of Homeland Security affiliated counter-terrorism expert Philip Haney.

During the forum, he referenced a document entered as evidence in the federal trial U.S. vs Holy Land Foundation called the "Explanatory Memorandum".

[citation needed] Colbeck made a point of highlighting that Abdul El-Sayed, one of his Democratic Party opponents, was Vice President of the Muslim Students Association at the University of Michigan.

[31] An affidavit filed by Colbeck claims that the computers used by election officials were connected to the Internet, which "opens the door" to possible vote manipulation.

[33] Colbeck assisted My Pillow founder Mike Lindell in the production of a two-hour documentary, Absolute Proof,[34] that aired on conservative media outlets and social media February 5, 2021, asserting Chinese cyber hacking was largely responsible for Joe Biden winning the presidency in 2020.

The New York Times described the production the same day as "a falsehood-laden film about election fraud," reliant upon discredited testimony and baseless speculation.