If you cannot visit the Consular Offices in South Texas, you may want to apply via the internet. The form is available at the Consulate General of Vietnam in Houston US America site. Send your duly filled entry permit application form attached through email with a reachable telephone number for contacts later after the form is received. In addition to the application form, you will need to annex two digital passports of yourself. Consulate Offices will also review your application where you want to travel devoid of these documents, for instance if there is a diplomatic privilege or other legal grounds.
The papers allow you to choose the period of stay, if you want a long vacation all you need is to indicate the number of months you contemplate to spend there. However, if you intend to stay for more than three months, you should seek a Vietnamese travel agent beforehand as to obtain necessary approval with the Vietnam Immigration Services. Generally, travelers are issued with a loose-leaf or a stamped pass, the difference is only on the form of issuing them as they stand on equal footing before authorities legally and validly. Nevertheless, a loose-leaf travel permit is mainly obtained to meet urgent needs, it is not necessary to produce your original passport for this type of permit.
You can also send someone on your behalf to apply at the Consulate Offices. For expeditious issuance of visas, applicants are allowed to include everyone they will be traveling with in a single package. All applications are evaluated within three to five business days from the day when the form is submitted to the Consulate Office. Conversely, prompt applications can be processed within two days at an additional fee. In case you will spend less than three months, even if you do not have entry permit approval, the Consulate General has discretion to authorize your travel. That is about Vietnam Visa in Houston.