The GAO is an independent, nonpartisan Congressional agency with a mission is to support Congress in meeting its constitutional responsibilities and improving accountability of the federal government. The team explored the role of immigrant workers in the U.S. workforce. Firstly, workforce participation trends for citizens and non-citizens were compared across different industries; secondly, micro trends pertaining to likelihood of employment and specific characteristics between citizen and non-citizen workers were analyzed and reported. Research questions considered worker education level and English proficiency in numerous industries. Some of the characteristics investigated in relation to likelihood of employment included sex, age, education, English proficiency, number of years in the US and place of birth. The team’s findings which will serve to inform and support future research.