Errors in the materials that were submitted or a lack of thorough documentation can also cause problems when they are evaluated. The applicant's incapaus visa slots bookingcity to clearly state that they intend to return home after finishing their studies is another frequent cause for visa denials. U. S. According to immigration law, holders of F1 visas must maintain non-immigrant intent, which means they have to show that they have no intention of staying in the U.S.