"Put 'America first,' and go for the victory, even if it means shutting the government down for a period of time," Trump wrote on Truth Social Thursday night.

After last-minute hurdles toppled their original plan, House Republicans failed to pass a deal to keep the government running despite Trump's support.

When a shutdown happens, the government isn’t able to spend money — with some exceptions — meaning that federal employees across the country would be expected to work without pay until the shutdown ends or face furloughs. In turn, essential services would continue to operate, but resources would be significantly strained.

Lawmakers have until midnight Friday to pass a bill or risk shutting down the government before they embark on a 16-day break