What is the problem with the opposition on renaming INDIA as Bharat?

The Narendra Modi-led government is likely to bring a resolution to change the official name of India to 'Bharat' during the special session of Parliament to be held from September 18-22. Several BJP leaders, including Assam Chief Minister Himanta Biswa Sarma, on Tuesday came out in support of renaming the country to 'Bharat'.