The protest was organized and promoted by Women's March, the same group that mounted a massive protest effort a year ago shortly after President Donald Trump took office. We want to keep our journalism open and accessible and be able to keep providing you with news and analyses from the frontlines of Israel, the Middle East and the Jewish World. Most of the protesters were female.
The protest took place in the atrium of the Hart Senate Office Building.
Jayapal has also helped organise "Families Belong Together" protests set for Saturday, with demonstrations in Washington, D.C., and other cities across the nation.More news: Italy says 'arrogant' France could become main enemy on migration
"What the administration is doing right now is morally wrong, it is inhumane and it has to stop", Gillibrand said.
Protesters waved banners saying "End all detention camps", and chanted "We care!" in an apparent response to First Lady Melania Trump recently wearing a jacket marked "I really don't care, do u?" while on her way to visit migrant children at a detention center in Texas.
Linda Sarsour, a co-founder of the Women's March, said she hoped the protests, apart from sending a message to the administration and Congress, would mobilize people to vote in the midterms.
Capitol Police showed up at the Hart building shortly after the sit-in began, and proceeded to arrest and process demonstrators in groups of 25.More news: Suarez inspires Uruguay to win over Russian Federation
Their chant "Say it loud, say it clear, immigrants are welcome here" echoed through the building, drawing scores of Senate staff to upper mezzanine floors from where they watched the commotion. As they passed by the Trump International Hotel, the protesters yelled "Shame" and "Where are the children?". That police had led to the separation of thousands of children from their parents before the Trump administration halted the separations in late June.
Actress Susan Sarandon joins protesters calling for ICE to be abolished and an end to family separation in a Senate building.
Ana Maria Archila, executive director of the Center for Popular Democracy, said calling for the disbandment of ICE "would have seemed absurd even a few months ago".
Most of the children who had been separated from their families before the order was signed have not yet been reunited with them.More news: Argentina take player power to new level ahead of Nigeria clash