During the Day Without Immigrants, people marched from Mt. Pleasant to the White House (Photo by Lorie Shaull)

Without immigrants, most of the city’s restaurant industry would collapse. The strike yesterday—billed as a Day Without Immigrants—demonstrated that anecdotally. The Office of Revenue Analysis’ District, Measured blog, meanwhile, pulled the hard numbers: 71 percent of chefs, 61 percent of cooks, 47 percent of food prep workers, and 44 percent of waiters are immigrants.

Of the city’s total workforce of around 826,000 (people who work in the District proper, regardless of where they live), just over one-fourth are immigrants. While most of the attention was on shuttered restaurants, as well as some schools and daycares, the professions in D.C. that are most dominated by immigrants are carpentry and housekeeping—80 percent and 78 percent, respectively.

The authors note that while the highest concentration are in low- and middle-wage jobs, immigrants make up nearly half the workforce in several fields—economists, mathematicians, and physical scientists.

The data comes from the American Community Survey, which, incidentally, Republicans despise and are likely to try to eliminate.

At least 680 undocumented immigrants were arrested by Immigration and Customs Enforcement nationwide during the first full week of February. ICE confirmed increased enforcement activity in Northern Virginia, though it is unclear how many people have been swept up. Most prominently, two men were arrested as they left a church shelter in Alexandria.

Of D.C.’s roughly 70,000 immigrants, an estimated 25,000 are undocumented, according to city officials.

The Bowser administration allocated $500,000 in new grants last month to serve immigrants in the District facing or fearing deportation. The House Oversight Committee Chair Jason Chaffetz almost immediately sent a letter inquiring about its legality, and the Trump administration has said it will full federal funding for sanctuary cities. But local leaders say they will remain steadfast.