Mariani Rosa graduated from Macalester College with a major in History and is a recipient of Macalester’s “Alumni Distinguished Citizen Award.” He was a Mondale Policy Fellow at the University of Minnesota Hubert H. Humphrey Institute and a U.S. delegation member of the American Council of Young Political Leaders exchange to Argentina and Uruguay.
Carlos Mariani Rosa was named executive director of Minnesota Minority Education Partnership, Inc. (MMEP), in 1997. Prior to joining MMEP he served as director of Hispanic Ministry for the Minnesota Council of Churches and as interim director for the Minnesota Hispanic Education Program. A recognized leader in the nonprofit and public sectors, he has spent more than 25 years advocating on behalf of communities of color.
Over the years Mariani Rosa has been active in several community-based organizations and has served on the boards of the St. Paul Children’s Initiative the West Side Health Clinic Capital Campaign Committee. Mariani Rosa currently serves on the boards of the Rainbow Research and Minnesota Council on Economic Education. He is also a founding member of the Saint Paul Foundation’s “ElFondo” Endowment Committee.
Elected to the Minnesota House of Representatives in 1990, Mariani Rosa is currently serving his ninth term representing Saint Paul district 65B. He was recently named chair of the E-12 Education Policy Committee and is a member of the National Conference of Hispanic State Legislators. His efforts in the House have focused on issues which greatly impact urban and minority communities including: education, public transit, housing and economic development.
In 1993, he received the “Legislator of the Year Award” from the Minnesota Alliance for Progressive Action, and was also recognized by the Jobs Now Coalition, receiving their “Courage of Conscience Award” for work on behalf of low-income immigrant communities. Mariani Rosa has also been recognized by Literacy Minnesota for outstanding advocacy as a legislator.
Saint Paul Supports Keith Ellison Fundraiser
"The list of those expected to show up smiling and fork over the moola reads like a who's-who of tax-and-spend big government in St. Paul": Sen. Ellen Anderson, Rep. Matt Entenza, Chief Bill Finney & Linda Finney, Rep. Alice Hausman, Council Member Lee Helgen, Rep. Sheldon Johnson, School Board Member Kazoua Kong-Thao, Council President Kathy Lantry, Rep. John Lesch, Rep. Tim Mahoney, Rep. Carlos Mariani, Council Member Debbie Montgomery, Revs. Byron Moore & Sharon Moore, Sen. Mee Moua, School Board Member Al Oertwig, Comm. Rafael Ortega, Sen. Sandy Pappas, Rep. Michael Paymar, Comm. Victoria Reinhardt, (former Mayor) Jim Scheibel, School Board President Elona Street-Stewart, Rep. Cy Thao, Council Member Dave Thune, Rev. Carl Walker. 
Supported Progressive Health Care Reform
In late 2009, Carlos Mariani was one of more than 1,000 state legislators to sign a letter entitled "State Legislators for Progressive Health Care Reform". The letter was a project of the Progressive States Network and was developed in consultation with national health care reform advocates, including the AFL-CIO, AFSCME, Community Catalyst, Families USA, Herndon Alliance, National Women's Law Center, Northeast Action, SEIU, and Universal Health Care Action Network. The letter reads in part,
- "Failure to pass national comprehensive health reform now will further jeopardize state and local budgets, undermining public services like education, public safety, and transportation infrastructure... We, the undersigned, call on President Obama and the Congress to enact bold and comprehensive health care reform this year – based on these principles and a strong federal-state collaboration – and pledge our support as state legislators and allies in pursuit of guaranteed, high quality, affordable health care for all."
Hands off Honduras
Press conference: Minnesota legislators condemn US military aid to Honduras
Minnesota Hands off Honduras was live March 2018:
Representatives Ilhan Omar and Carlos Mariani and Senator Patricia Torres Ray discuss HF 3580 and SF 3105 urging Congress to pass the Berta Cáceres Act and end US complicity with human rights abuses in Honduras. Also speaking: Thomas Haines, Mayflower Church and Witness for Peace, Sherilyn Young and Ina Gruber, Minnesota Hands off Honduras.