According to NBC and other US media, the US Senate failed to pass a temporary appropriations bill on the evening of September 30th, local time, and the White House subsequently officially announced an impending government shutdown. Reports indicate that federal agencies will face a shutdown, potentially affecting the entire country.

The White House Office of Management and Budget reportedly stated that the US government shutdown will begin at 11:59 PM local time on September 30th.
US President Trump stated on September 30th that a federal government shutdown could lead to mass layoffs of federal employees. He also stated that if he is dissatisfied with military commanders, he would "fire them on the spot."
Separately, according to the BBC, the White House Office of Management and Budget issued a memorandum confirming that the government shutdown will officially begin at midnight on September 30th and blamed the Democrats for the impasse. The memorandum stated that affected agencies should now implement their orderly shutdown plans. It is unclear how long the Democrats will maintain their untenable stance, making the duration of the shutdown difficult to predict.
As previously reported, to avert a federal government shutdown, Trump met with bipartisan congressional leaders at the White House on the evening of September 29th to discuss a temporary funding bill. This meeting was seen as a last chance for the two parties to bridge their differences and reach a budget consensus before the federal government shutdown deadline on the early morning of October 1st. However, statements from both sides after the meeting indicated that the two parties had failed to reach an agreement, and another federal government shutdown may be inevitable.