Washington is looking for concrete steps from North Korean that progress has been made on that front after Kim pledged to eliminate his country's nuclear weapons' program at his and Trump's first summit in Singapore last summer.
As for Trump, the US has not yet announced his travel schedule, but a number of local news outlets reported that he is likely to set out Monday, citing flight time from Washington and the itinerary of US Secretary of State Mike Pompeo.
"The alternative to giving up his nuclear weapons is remaining a pariah state, remaining a nation that is unable to trade, unable to grow, unable to take care of its own people", Pompeo said of Kim in an interview with CNN's "State of the Union".
'But the president said he doesn't, ' Tapper pointed out.
"There are ample reasons to be sceptical that Chairman Kim is committed to a nuclear-free North Korea", the lawmakers wrote.
Pompeo said Sunday he's optimistic that Kim will give up his nuclear weapons, despite the track record of North Korea regimes refusing repeated requests by the US over the years that it do so.
CNN anchor Jake Tapper also called out Pompeo for contradicting President Trump on whether or not North Korea remains a nuclear threat.
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The criminal complaint alleges that Fry had no valid work-related reason to look at SARs involving Cohen. And if we did (we didn't), then every reporter in America would be jailed and unable to do their job".
US President Donald Trump on Sunday said North Korea could become one of the world's "great economic powers" if it relinquished its nuclear arsenal, ahead of his summit with Kim Jong Un. North Korea has great potential for the future!'
"He tweeted there is no longer a nuclear threat from north Korea", Tapper said.
The State Department declined to comment on the report.
"If the upcoming DPRK-US negotiations end without results as wished by the opponent forces, the US people will never be cleared of the security threats", it added. The declaration came hours after an historic meeting between Trump and North Korean leader Kim Jon Un in Singapore.
In rare, revealing coverage of Kim's travel, the North's Rodong Sinmun newspaper featured photographs of the leader getting a red-carpet send-off on Saturday afternoon and waving from a train door while holding a cigarette.
While the two leaders ready themselves for their second summit, working-level officials from the two sides have been hammering out details of the summit agenda in Hanoi. And they will be on the ground again today. At the first meeting between a sitting USA president and a North Korean leader, both sides pledged to work towards denuclearization of the Korean peninsula.