The letter says "The president has worked tirelessly to apply maximum pressure to North Korea to end its illicit weapons programs and bring peace to the region".
It said the Trump administration united China and others in imposing strict sanctions. "We can think of no one more deserving of the Committee's recognition in 2019 than President Trump for his tireless work to bring peace to our world".
If they were genuinely grateful to Trump, they were also seen as stoking the ego of the impulsive USA leader so that he would continue to support South Korea's efforts to resolve the North Korean crisis through dialogue.
"It's surreal in the sense that it's clearly premature to be talking about giving anybody a Nobel Peace Prize", said Aaron David Miller, a former U.S. diplomat and negotiator in several Democratic and Republican administrations. Japanese Prime Minister Shinzo Abe and South Korea's Foreign Minister Kang Kyung-wha both credited Trump for the breakthrough.
Kim and President Moon Jae-in of South Korea held a historic summit at the border village of Panmunjom in the Demilitarized Zone on April 27.
Trump's predecessor, Barack Obama, won the 2009 Nobel Peace Prize just months into his presidency, an award many thought was premature, given that he had little to show for his peace efforts beyond rhetoric. During the meeting, Jae-in received a telegram from Lee Hee-ho, a former first lady of South Korea, congratulating him for a successful summit meeting with Jong-un on Friday and wishing him a Nobel Peace Prize. Kim also agreed to stop testing intercontinental ballistic missiles. "What we need is only peace".
The very idea, put forward by a handful of Republican lawmakers in a Wednesday letter nominating the United States president for the esteemed award, is enough to make his American and global detractors cringe.
Obama also tried to bring peace to the Korean Peninsula during his time as president but did not make much progress.
Messer added, "If the Nobel Peace Prize means anything, President Trump should have a great shot at getting it".
Other past presidents honored with the award include Jimmy Carter, Woodrow Wilson and Theodore Roosevelt.