Modi is the first Indian prime minister to visit Portugal.
Among those waiting to catch a glimpse of Modi was Mridula, originally from Hyderabad, and working in NY on an H1B visa.
But sources tracking the discussions say the US State Department has been concerned about the potential destabilising impact of introducing high-tech drones into South Asia, where tensions are simmering between India and Pakistan.
"We hope that the outcome on the issue is positive for Indians and at the same time does not anger Americans as well".
The Trump Administration, the official said, believes that defence trade strengthens both the countries' security, it reinforces the strategic partnership, and it allows their armed forces to cooperate more closely and improve their interaction with one another. He forged a strong relationship with President Barack Obama, and on his last visit in June 2016, he addressed Congress and described the United States as an "indispensable partner".
India's leader heads to the U.S. this weekend for his first meeting with President Donald Trump, seeking to build on growing ties between the world's two largest democracies and move beyond disagreements over climate change. Also, what will this visit mean for Pakistan and China, given India's thorny relations and America's complex ties with those two countries?
"The US and India are both committed to combating all forms of terrorism and strengthening their cooperation in areas like terrorist screening, intelligence and information sharing, terrorists' use of the Internet, and, of course, terrorist designations", the official said.
The four lawmakers also claimed that India has imposed several new significant barriers that have harmed United States producers across all sectors of the American economy, including services, manufacturing, and agriculture. We think he is a great leader. But frankly the priorities are different and the natures of relationships are different. The deal is estimated to be worth about $2 billion. "The US is interested in leaning forward in providing high technology, the kind of technology it provides to its closest allies and partners", the senior administration official said. White House officials dismissed suggestions that the administration has ignored India. "So I came to see and meet him", said another.
The lawmakers, from the Republican and Democratic parties, said in a letter to Trump that high-level engagement with India had failed to eliminate major trade and investment barriers and had not deterred India from imposing new ones.
Today, almost four million Indian Americans are in the United States, and more than 166,000 Indian students are studying in the USA, contributing Dollars 5 billion in economic activity and supporting an estimated 64,000 American jobs, the official said.