BOSTON – Hundreds of immigrants and their supporters rallied Saturday in Boston and Nashua, N.H., to pile up pressure on the U.S. Congress to pass comprehensive immigration reforms that include a path to citizenship for the 11 million foreign-born citizens living illegally in the country.

In Boston, organizers say about 800 immigrants, community activists, representatives of workers’ groups and political leaders rallied at Faneuil Hall on Saturday morning. They then marched to the nearby federal building that houses the U.S. Immigration and Citizenship Services and an immigration court.

Massachusetts Sen. Elizabeth Warren and Rep. Joseph Kennedy III addressed the crowd in Boston.

In Nashua, participants rallied late Saturday morning in front of Nashua City Hall before marching to the offices of New Hampshire Sens. Jeanne Shaheen and Kelly Ayotte.

Among the groups taking part were labor organizations, the New Hampshire Alliance of Immigrants and Refugees, the American Friends Service Committee, New Hampshire Civil Liberties Union and numerous faith-based groups.

The rallies were among the first events of the “Power Up for Citizenship” initiative being launched nationwide.

A similar rally is planned in Providence, R.I., on Sunday.