New Delhi has revised its regulations pertaining to the entry of foreign nationals holding long-term Indian tourist visas . Official sources said in New Delhi, various ports of entry in the country have already started enforcing the revised regulations.The revision comes in wake of the arrest of David Coleman Headley and Pakistani-Canadian Tahawwur Rana by FBI on charges of plotting terror attacks in India. Both Headley and Rana were issued multi-entry visas by India without proper security clearances.<br/>The US advisory on the embassy website said, Americans with five-or ten-year tourist visas will no longer be allowed to enter India within two months of their last departure from India if their last visit was longer than ninety days or if they have stayed longer than 180 days during the past year.The US advisory also said these restrictions will be enforced whether or not the tourist’s passport has been stamped to indicate that return is not allowed within two months.<br/>AIR correspondent reports,the changes,however will not affect Americans with other types of visas such as tourists with short-term visas,and those who have not stayed in India for the stipulated time period.<br/><br/>