US lawmakers have voted to fund the Department of Homeland Security (DHS), ending a 76-day partial government shutdown over the federal agency's immigration enforcement operations.

Members of the US House of Representatives approved a Senate-passed bill via voice vote, sending it to President Donald Trump for signature.

The DHS has continued to run without routine funds since 14 February, leading to major disruptions and hours-long wait times at airports across the US.

The measure reopens DHS but does not provide funding for Immigration and Customs Enforcement (ICE) or parts of Customs and Border Protection - the two agencies responsible for immigration enforcement.

Democrats have refused to fund the two agencies, unless they are reformed in the wake of two deadly shootings by the agencies' operatives in the state of Minnesota.

Republicans have rejected those demands, instead pushing for full funding for ICE and Border Patrol, resulting in the impasse.

The two agencies would now get additional funding in another, separate bill, that is currently being considered by the House.

But Thursday's vote clears the DHS funding deadlock in Congress that led to chaos at airports in March due to a shortage of security officers at checkpoints.

In March, after days of snarled traffic at US airports, Trump signed executive order to pay Transportation Security Administration (TSA) agents, who are considered essential workers and are required to work without immediate pay during a federal shutdown.

While that eased tensions, the White House since warned that temporary funding for TSA and others under DHS' umbrella would "soon run out".