The global travel industry is still reeling from the ongoing impact of the Coronavirus (COVID-19) outbreak and major U.S. airlines continue to alter their policies to encourage customers to keep their bookings. Here are the latest policy changes and extensions from Delta, American, and United.

The US State Department raised its advisory for all overseas travel to the highest possible level. The Level 4: 'Do Not Travel' advisory covers all international travel and is calling on all Americans overseas to arrange for immediate return to the United States, unless they are prepared to remain abroad for an indefinite period.

Amtrak will cancel its flagship Acela Express trains in the Northeast on Monday, as the coronavirus pandemic continues to reduce demand for intercity travel. The railroad will still operate its slower Northeast Regional trains from Boston to New York to Washington, though at only 40% of the regular weekday schedule.

The border between Canada and the United States is being closed to prevent the spread of the coronavirus. The decision was made as part of a joint agreement between President Donald Trump and Prime Minister Justin Trudeau. The move means that the longest international border in the world is now officially closed to all non-essential traffic.

The US and Mexico have restricted crossings at the southern border banning general tourism and nonessential travel. Trade will continue in both directions and essential travel for work, including medical and education reasons is still allowed.

TSA published a new Coronavirus (COVID-19) information page on its website to inform travelers of the new rules and changes that are now in effect. The new webpage also features facts and location information on TSA officers that tested positive for the Coronavirus.