President & Vice.
The President of the United States and the Vice President of the United States are not allowed to travel together on the same mode of transportation for security reasons. This is to ensure continuity of government in case of any unforeseen event or emergency.
No they can't, royal members must travel separately in case of a bad accident.
Whenever they are on a public plane, bus, ship, train or any other form of public transport.
The decision always is to be made by the officials at the point of entry.
President and Vice President
They are Certifying Officers when approving travel documents that contain payments, and Departmental Accountable Officials at all other times.
It allowed Americans to travel from coast to coast.
You are usually allowed to travel with $800 in cash in Barbados.
Is it allowed to travel around the world with the world passport?
Wolves do travel together in packs.
Some reptiles travel together.