The protest took place outside the Capital as several thousand demonstrators rallied in an effort to convince Congress to pass comprehensive immigration reform.
The arrests happened after a rally was held in nearby National Mall and protestors then moved to a nearby street and blocked traffic.
The legislators arrested included Joseph Crowley and Charles B. Rangel of New York, Keith Ellison of Minnesota, Al Green of Texas, Luis V. Gutierrez and Jan Schakowsky of Illinois, Raul M. Grijalva of Arizona and John Lewis of Georgia. More than 150 other people were also arrested, according to the Capitol Police Department.
Some conservative critics complained about the rally having access to the National Mall during the U.S. Government shutdown. In a statement, the Park Service said on Tuesday it had allowed the immigration rally as an expression of "First Amendment rights," the same rationale it had provided for ultimately opening the nearby World War II veterans war memorial.
A group of Democratic congressmen introduced a comprehensive immigration bill last week, which would offer a path to citizenship to immigrants as well as increased protection against discrimination.