US Tax on NRO interest income. I am aware NRE interest income is taxed as Global Income.

I am Indian Citizen and on L1 Visa, residing in US since mid 2014. I have a NRO bank accounts in India. The NRO account had my savings and deposits based on my Indian income from Rental & Salary while i was in India. In 2015, i have earned interests on those and has been taxed 30% (Tax deducted  at source as per Income tax department) in India.    Do i need to do anything in my tax return in US? Have heard mixed comments from different forums on internet but not sure if interest income from NRO which is already taxed in India is taxable in US as well?