Gordon Humphrey, a longtime critic of Trump, said in a letter, "Donald Trump is seriously sick". North Korea dominated the conversation between the two leaders, according to a readout of the call.
"President Trump's threat to rain down "fire and fury" on North Korea is like pouring gasoline on a fire", Humphrey wrote.
The former senator also encouraged the state's House representatives, both Democrats, to support legislation in the House, HR1987, the Oversight Commission on Presidential Capacity Act, which would create a commission to invoke the 25th amendment and "carry out a medical examination of the President to determine whether the President is mentally or physically unable to discharge the powers and duties of the office".
Soderberg criticizes the president's lack of diplomacy and she personally wishes that the worldwide community increase pressure on North Korea rather than use outright force.
They agreed that North Korea must stop its provocative and escalatory behaviour, the White House said.
US President Donald Trump speaks to reporters after a security briefing at his golf estate in Bedminster, New Jersey, US, August 10, 2017.
On Thursday, North Korea's state-run KCNA news agency cited officials claiming that America's regional military strategy and sanctions risked inviting "a shameful defeat and final doom".
In another tweet early Friday morning, the President continued his war of words with North Korea, saying the US military of "locked and loaded, should North Korea act unwisely".
In recent days، Trump and the North Korean regime have engaged in heated rhetoric about the Asian nation's nuclear weapons program.
"Hopefully Kim Jong Un will find another path!" he added, in reference to the country's authoritarian leader. "His sick mind and reckless conduct could consume the lives of millions".