Two Republican lawmakers in blue states chided President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE during the Memorial Day holiday for attacking former Vice President Joe Biden Joe BidenBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Democratic groups using Bloomberg money to launch M in Spanish language ads in Florida Harris faces pivotal moment with Supreme Court battle MORE during a four-day state visit to Japan.

“Wrong for @POTUS Trump to criticize @JoeBiden in Japan and to agree with Kim Jong-un Kim Jong UnSatellite images indicate North Korea preparing for massive military parade South Korea warns of underwater missile test launch by North Korea Trump says he didn't share classified information following Woodward book MORE. Politics stops at water’s edge,” Rep. Pete King Peter (Pete) KingTrump holds private funeral service for brother Robert Trump at White House Cheney clashes with Trump Coronavirus Report: The Hill's Steve Clemons interviews Rep. Sean Patrick Maloney MORE (R-N.Y.) tweeted Monday. “Never right to side with murderous dictator vs. fellow American.”

Wrong for @POTUS Trump to criticize @JoeBiden in Japan and to agree with Kim Jong-un. Politics stops at water’s edge. Never right to side with murderous dictator vs. fellow American. — Rep. Pete King (@RepPeteKing) May 27, 2019

“It’s Memorial Day Weekend and you’re taking a shot at Biden while praising a dictator,” Rep. Adam Kinzinger Adam Daniel KinzingerFox News reporter defends confirming Atlantic piece despite Trump backlash: 'I feel very confident' GOP lawmaker defends Fox reporter after Trump calls for her firing Lindsey Graham: 'QAnon is bats--- crazy' MORE (R-Ill.) also tweeted Sunday. “This is just plain wrong.”

It’s Memorial Day Weekend and you’re taking a shot at Biden while praising a dictator. This is just plain wrong. https://t.co/2ONOGEmy39 — Adam Kinzinger (@RepKinzinger) May 26, 2019

During the trip, Trump tweeted that he “smiled” at North Korean leader Kim Jong Un Kim Jong UnSatellite images indicate North Korea preparing for massive military parade South Korea warns of underwater missile test launch by North Korea Trump says he didn't share classified information following Woodward book MORE’s characterization of Biden as “low IQ.” At a press conference Monday, Trump reaffirmed his agreement with Kim on Biden, telling reporters "Kim Jong Un made a statement that Joe Biden is a low IQ individual. He probably is based on his record. I think I agree with him on that.”

King, a 14-term congressman, won by one of his narrowest margins in 2018, defeating challenger Liuba Grechen Shirley (D) 53 percent to 47 percent after winning 62 percent to 38 percent against DuWayne Gregory in 2016.

Kinzinger defeated his 2018 challenger by a wider margin, 55 percent to 41 percent, but as of 2019 is the only Republican representing an Illinois district north of Peoria.