US President Donald Trump urged Indian Prime Minister Narendra Modi to do more to relax Indian trade barriers on Monday during talks in which both leaders took great pains to stress the importance of a strong US-Indian relationship.

At a closely watched first meeting between the two, Trump and Modi appeared to get along well.

Modi pulled in Trump for a bear hug on the stage as the cameras rolled in the Rose Garden.

"I deeply appreciate your strong commitment to the enhancement of our bilateral relations,” Modi told him.

“I am sure that under your leadership a mutually beneficial strategic partnership will gain new strength, new positivity, and will reach new heights.

Trump was also warm but made clear he sees a need for more balance in the US-India trade relationship in keeping with his campaign promise to expand American exports and create more jobs at home.

Last year the US trade deficit with India neared $31 billion.

Trump said he would like a trading relationship that is “fair and reciprocal.”

“It is important that barriers be removed to the export of US goods into your markets and that we reduce our trade deficit with your country,” he said.

Trump said he was pleased about an Indian airlines recent order of 100 new American planes and that the United States looked forward to exporting more energy, including major long-term contracts to purchase American natural gas.

These energy contracts “are being negotiated and we will sign trying to get the price up a little bit,” Trump said.

Modi came to Washington looking to revitalise a relationship that thrived under former President Barack Obama but has appeared to flag as Trump courted India's rival China in an effort to persuade Beijing to do more to rein in North Korea.

Modi effusively praised Trump, hailing his vast and successful experience in the business world and great leadership for US-India ties, which he said should lend an aggressive and forward looking agenda to our relations.

Trump accepted Modi's invitation to visit India, the White House said in a statement, but no time frame was given for the trip.

Modi harked back to Trump's “Make America Great Again” campaign slogan to stress that his agenda for his country was little different than Trump's.

“I am sure that the convergence of my vision for “New India” and President Trumps vision for making America great again will add new dimensions to our cooperation,” he said.

Trump did not mention US differences with India on immigration and the Paris climate accord.

“The future of our partnership has never looked brighter,” Trump said as both leaders underscored the importance of the defence and security relationship.

Aviation deals

As they met, a Pentagon agency said the US State Department has approved the possible sale to India of a Boeing C-17 transport aircraft with an estimated cost of $366 million.

The United States also has offered to sell a naval variant of the Predator drone made by US defence contractor General Atomics Aeronautical Systems, the White House said in a statement, a deal that would be worth more than $2 billion.

The United States has become the leading supplier of defence equipment to India, signing contracts worth more than $15 billion since 2008.

On Monday evening, Trump and Modi had a working dinner, the first time Trump has played host to a foreign dignitary at a White House dinner.

Trump administration officials have pointed to both leaders' impact on social media - each has more than 30 million Twitter followers - as proof they are cut from the same cloth.

“If the chemistry is good, everything else gets sorted,” said an Indian official.

“The only way is up. How much up we go depends on the leaders. If they click, we go up higher.”

Trade, however, remains an irritant, and on Saturday, leading US congressmen complained in a letter to Trump that high-level engagement had failed to eliminate major barriers to US imports and investment and had not deterred India from imposing new ones.

Indian officials reject suggestions that Modi's “Make in India” platform is protectionist and complain about the U.S. regulatory process for generic pharmaceuticals and rules on fruit imports.

They stress the future importance of the huge Indian market to U. firms and major growth in areas such as aviation which will offer significant opportunities for U.S. manufacturers.

Among the Indian business executives in Washington for Modi's visit was Ajay Singh, chairman of Indian budget airline SpiceJet, which in January announced a deal to buy up to 205 aircraft from Boeing, worth up to $22 billion at list prices.

Singh told Reuters that according to the US Department of Commerce, the deal would sustain up to 132,000 jobs.

“The market is growing 20-25 percent a year. Even at today's pace you need 100 more planes a year just to keep pace with the market and we are not getting anywhere close to that number.”

As our economy grows ... we can potentially create a lot of jobs for Americans in the United States, he said.

Boeing has estimated India will need 1,850 new aircraft worth $265 billion by 2036 to meet demand for air travel.