Washington (CNN) With her infant daughter in tow, Democratic Sen. Tammy Duckworth visited female activists in a Capitol Hill Senate building who are protesting the administration's "zero-tolerance" immigration policy

"I wanted to show my support for the folks here today," Duckworth, who gave birth to her second child in April, told CNN in an interview after she visited with protesters. "I could only imagine what it would be like to have my daughter -- my breastfeeding child -- ripped away from me the way some of these other moms' babies have been."

More than 1,000 female activists marched through Washington Thursday to protest the separation of children from their immigration parents at the US-Mexico border.

US Capitol Police arrested approximately 575 individuals with unlawfully demonstrating, including Rep. Pramila Jayapal, a Democrat from Washington.

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