Over two dozen influential lawmakers along with eminent Indian-Americans gathered at the Capitol Hill to lit the traditional "diyas".
The event -- the first of its kind event at the Capitol Hill -- was organised by the two Co-Chairs of the Congressional Caucus on India and Indian Americans, Congressmen Joe Crowley and Peter Roskam in recognition of increasing presence of the Indian-American community.
The occasion was also used to highlight significance of India-US relationship.
"I have come here to say Happy Diwali," said Nancy Pelosi, Leader of the Democratic Party in the House of Representatives.
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"This is a truly historic event," Crowley said.
Roskam said Indian Americans are an example of an enormous diaspora that is incredibly influential.
"You have the ability to bring together people from both sides of the isle in ways that are powerful and significant," he said.
"When we look at the relationship between the United States and India moving forward it is a wonderful relationship that has a great thing in store," said Roskam, who along with other lawmakers were welcomed at the historic event with red tilak, jasmine garland. A Hindu priest presented them a traditional shawl amidst chanting of Vedic mantras.
"Our goal should be to increase and deepen this relationship with counter-terrorism co-operation, with more trade and investment and trying to make sure that we strengthen our ally India. And that is our intention here, whether we are Republican or a Democrat, our goal is to deepen this relationship," he said.
Congresswoman Tulsi Gabbard, the first Hindu American lawmaker, diversity in the Congress is indicative of the special nature of Diwali itself.