India's strong reaction came a day after a federal US court issued summons against Modi on his alleged role in 2002 communal violence in Gujarat when he was the state chief minister.
Even the White House downplayed the issue, with its Press Secretary Josh Earnest saying that it (lawsuit) was not going to have any impact on Prime Minister Modi's very important visit and added that sitting heads of government also enjoy personal inviolability while in the US, which means they cannot be personally handed or delivered papers to begin the process of a lawsuit.
He said the government will handle the process in accordance with the procedure and an action was underway on that.
The summons against Modi were issued by US Federal Court for the Southern District of New York following a lawsuit filed by the New York-based American Justice Center (AJC), a non-profit human rights organization, along with two "unnamed" survivors of the 2002 Gujarat violence.
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"The India-American community in the US is also eagerly looking forward to the Prime Minister's visit and has prepared a rousing reception for him.
"The allegations in the case are baseless and similar to other such allegations made in the past against the Prime Minister. A Supreme Court of India-monitored investigation has comprehensively examined and dismissed these allegations as baseless," he said.