Biggs was named the chairman of the Subcommittee on Environment on the House Science, Space, and Technology Committee in the 115th Congress.
Biggs served in the Arizona State Senate, representing District 12 from 2011 to 2017. He was president of the Senate from 2013 to 2017 and majority leader from 2011 to 2012. He also served in the Arizona House of Representatives, representing District 22 from 2003 to 2011.
Prior to public service, Biggs worked as an attorney with a license to practice in Arizona, Washington, and New Mexico.