The U.S. federal government has been "shut down" for more than 19 days. According to US media reports on the 19th, affected by the "shutdown", about 1,400 employees of the National Nuclear Safety Administration under the US Department of Energy will be forced to take unpaid vacation on the 20th, which is the first time since the agency was established in 2000.

Work involving nuclear weapons assembly sites will be affected and relevant facilities will enter safe shutdown mode. Reported that if the "shutdown" continues, as early as 28, related weapons manufacturing, special nuclear material enrichment will also stop.