In the Maryland legislature, Muse criticized the congressional and legislative redistricting processes as being overly partisan and discriminatory toward black voters. He has tried to expand financial literacy, protect domestic violence victims, and provide more rights to noncustodial parents. He has also been heavily involved in issues affecting Prince George's and his district, including attempts to revitalize Rosecroft Raceway in Fort Washington; in 2010, Muse sponsored unsuccessful legislation to legalize gambling on card games at the horse track. He also initially opposed allowing a casino at National Harbor, Maryland, favoring instead locating a casino at Rosecroft. Muse is also known for strong social-conservative viewpoints, including strong opposition in 2011 and 2012 to the Civil Marriage Protection Act and the 2012 Question 6 referendum on same-sex marriage. However, in 2014, Muse voted to ban discrimination based on gender identity after opposing a similar bill the prior year.
