"President Trump likes Chairman Kim and he doesn't think these sanctions will be necessary," the Sanders said.
Senator Chris Murphy, a Connecticut Democrat, told The Atlantic the president "went for the whole enchilada and lost badly."
Siti Aisyah, an Indonesian national, was freed after Malaysian prosecutors withdraw charges against her.
The summit between President Donald Trump and Kim Jong Un was "yet another meaningful incident on the issue of world peace," a state television station in North Korea claimed.
"Support impeachment!" the Californian Democrat tweeted.
"I didn't think this summit went well for the president at all, more importantly for the U.S. national security," Mike Rogers, a former Republican congressman said.
National Security Adviser John Bolton insisted President Donald Trump's Hanoi visit was somehow a "success" despite acknowledging that no denuclearization agreement was made and North Korea remains a threat to global stability.
Jesus, according to the reverend, would then go on to remind Trump that he needs to repent for some sins instead of trying to hide them.
"Maybe these guys just went over there to eat," the comedian mused.
The failure of the Hanoi summit made clear the limitations of bilateral talks, especially those between two leaders known to be temperamental.
"That was an anomaly. Typically our prisoners and hostages and detainees get back more or less in one piece."
The president said he believes Kim Jong Un when he says he was not responsible for American Otto Warmbier's death, but Haley blamed the North Korean regime's "cruelty."
Explaining the failure to reach an agreement with North Korean leader Kim Jong Un, President Donald Trump told reporters, "Sometimes you have to walk."
The U.S., North Korea and Vietnam, all deeply involved in the 20th century's Cold War, may now hold the power to end its last active conflict once and for all.
North Korean supreme leader Kim Jong Un's entourage includes his sister, his most trusted aide, a new U.S. envoy and his chief of staff.
"He has done more for the relationship between the two countries than clearly any president ever," Eric Trump said about the president at a Mar-a-Lago event. "I think it's undeniable."
Kim's train ride partially followed a route once taken by his grandfather.
President Donald Trump will go ahead with the Wednesday summit in Vietnam, despite being warned by White House aides that the North Korean leader could be mentally unstable.
As President Donald Trump flies Air Force One to Hanoi to meet with North Korean dictator Kim Jong-Un, it's worth remembering how he got out of going to Vietnam in the summer of 1968.
MSNBC presenter Joe Scarborough made the comments alongside Mika Brzezinski as they discussed Trump's upcoming summit with Kim Jong Un.
North Korean official media warned that the "rough handling of inter-Korean relations and DPRK-U.S. ties may incur grave consequences."