The US Administration has instructed all its diplomatic missions worldwide to identify certain groups that need extra scrutiny and adopt a rigorous vetting process for issuing visas.<br/><br/>In a diplomatic cable issued by Secretary of State Rex Tillerson, said, those applying for an American visa including tourist and business visas would be asked to furnish details of their employment and residence for the last 15 years and all the phone numbers they used in the previous five years. <br/><br/>It further says that the additional protocols have been put in place to prevent the entry into the US of foreign nationals who may aid, support or commit violent, criminal or terrorist acts and ensure that those allowed to come in are rigorously vetted.