Despite mutual praise between the two leaders, there has been a series of setbacks to U.S. relations with India since they last met more than a year ago.
When the cost of crude oil drops, economists say, it typically takes at least several weeks for gas prices to meaningfully follow. But the war in Iran has complicated the outlook for supplies.
The United States and Iran have signed a framework agreement for ending the war, but neither side has published the full text and its details remain unknown.