The U.S. government is nearing a partial shutdown, with a range of effects on public services and the broader economy. Employee furloughs and potential layoffs would halt some government activities. While other functions would continue — including the Trump administration's immigration crackdown. Medicare and Medicaid insurance programs would continue but some payments to providers could be delayed with certain employees off the job. The FDA, USDA and CDC would continue some of their public health functions, but with staff still diminished by furloughs. And long-term research programs would be halted. Air Traffic Controllers would stay on the job. But the training program for new controllers would likely halt, upending efforts to address a critical shortage in the profession.