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Source: Travel stateQUOTE
WHAT CONSTITUTES "STRONG TIES"?
Strong ties differ from country to country, city to city, individual to individual. Some examples of ties can be a job, a house, a family, a bank account. "Ties" are the various aspects of your life that bind you to your country of residence: your possessions, employment, social and family relationships.
As a U.S. citizen or legal permanent resident, imagine your own ties in the United States. Would a consular office of a foreign country consider that you have a residence in the United States that you do not intend to abandon? It is likely that the answer would be "yes" if you have a job, a family, if you own or rent a house or apartment, or if you have other commitments that would require you to return to the United States at the conclusion of a visit abroad. Each person's situation is different.
Our consular officers are aware of this diversity. During the visa interview they look at each application individually and consider professional, social, cultural and other factors. In cases of younger applicants who may not have had an opportunity to form many ties, consular officers may look at the applicants specific intentions, family situations, and long-range plans and prospects within his or her country of residence. Each case is examined individually and is accorded every consideration under the law.
HOW CAN I HELP?
You may provide a letter of invitation or support. However, this cannot guarantee visa issuance to a foreign national friend, relative or student. Visa applicants must qualify for the visa according to their own circumstances, not on the basis of an American sponsor's assurance.
US embassy in skopjeQUOTE
Q: What must be done to invite someone for a visit to the United States?
A: Hosts may send a potential guest a letter of invitation including the guest’s name and the reason for the visit. Such letters should also include the anticipated period of stay in the U.S. and a statement of which expenses will be borne by the host. Hosts are reminded, however, that visa applicants must qualify for a visa in their own right and that a host’s invitation is not a guarantee that a guest’s visa will be issued.
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