You can easy apply for a visa to travel to my country with 1 month or 3 months or longest ia 6 months for tourist visa by http://www.vietnamvisa.com/
Good news for United States citizens from Vietnam Goverment. recently time Vietnam Goverment let Only US citizens can get 1 year visa to travel to Vietnam with only 135USD. Let is plan to enjoy vacation in Vietnam.
Happy travel - Happy life!
Visit more here: https://vietnamvisa.org/