Travel Documents for port of entry

[annapoorna123]

My Parents have a tourist visa for 10 years. They have been before here once. They are again traveling to the US this year. Do they have to carry any travel documents for the port of entry?

[immihelp]

Check http://www.immihelp.com/trip-cancell...documents.html

Also, make sure to purchase visitors medical insurance for them, available for instant purchase at https://www.insubuy.com