Immigrants across the U.S. skip work, school in anti-Trump protest

By Serena Maria Daniels and Marty GrahamDETROIT/SAN DIEGO (Reuters) - Businesses shut their doors, students skipped class and thousands of demonstrators took to the streets in cities across the United States on Thursday to protest President Donald Trump's immigration policies.Activists called "A Day Without Immigrants" to highlight the importance of the foreign-born, who account for 13 percent of the U.S. population, or more than 40 million naturalized American citizens.Trump campaigned against