In Los Angeles protest organizers are predicting as many as 500,000 people will demonstrate on Saturday against a new anti-immigrant law being considered by Congress. The House of Representatives has approved legislation that would criminalize 11 million undocumented immigrants and make it a crime for priests, nuns, health care workers and other social workers to offer them help. The Senate is considering similar legislation. The National Immigration Forum has described the bill as the most restrictive immigration legislation in 70 years. The bill has generated mass opposition from immigrant communities around the country. On Thursday in Milwaukee, Wisconsin, as many as 30,000 people took part in a march titled “A Day Without Latinos.” It was the city’s biggest protest in years. Dozens of Latino businesses shut down for the protest. In Chicago, as many as 300,000 people filled the streets two weeks ago.