The United States Embassy in Singapore will remain operational, with visa and American citizen services to be available despite a government shutdown.

Appointments that were previously scheduled at the embassy's premises at 27, Napier Road before the shutdown began will be honoured, the embassy said in a Facebook post.

On its Facebook page, the US Department of State's Consular Affairs said that "scheduled passport and visa services will continue in the United States and at our posts overseas during the lapse in appropriations".

The US federal government officially shut down on Saturday - the first anniversary of President Donald Trump's inauguration - after lawmakers failed to agree on a stop-gap spending deal.

During government shutdowns, government employees are vulnerable to furlough, or temporary unpaid leave.

Other "essential" workers, including those dealing with public safety and national security, will continue working, some with and others without pay.

Ng Huiwen