NEW DELHI: Ministry of external affairs said on Friday that while visa rules and immigration matters are sovereign decisions of any country, India will continue to engage with the US on the difficulties faced by Indian travellers and students seeking to visit the US. “When issues concerning genuine travellers seeking to visit the US are brought to our attention, we take them up with the US side to minimise difficulties for our people,” MEA spokesperson said. He was responding to queries related to the US’s tightening of visa rules for foreign students, exchange visitors and journalists. The new regulations establish a fixed period of admission for non-immigrant visa holders in F, J, and I classifications, Department of Homeland Security said in a statement on Thursday. The F category visas are for students, the J category for exchange visitors, and the I category is for journalists.