The nations also said a military intervention "has not been and will not be considered" to end the crisis, something mentioned by Sheikh Sabah in his remarks.
From a podium in the East Room of the White House, standing next to President Trump, the Amir said that his country has "descended into some not very healthy issues especially in the media". He applauded Kuwait's "critical contributions to regional stability" but also repeated an offer to mediate himself, particularly between Qatar and Saudi Arabia and the UAE.
Trump says all the countries involved are "essential partners" in the fight against Islamic State group. Trump chose Saudi Arabia for his first overseas visit as president in May, two weeks before the Gulf crisis erupted. As the dispute has dragged on, the administration has dispatched other USA envoys to bolster the 88-year-old Kuwaiti emir's initiative.More news: Top Kashmiri separatist leader Yasin Malik arrested by NIA in Srinagar
This is while analysts have touted the Qatar crisis as the fallout of Trump's visit to Riyadh in early June.
Kuwait has been trying to mediate the dispute between Qatar and its US-allied Arab neighbors.More news: Facebook: Russian group spent $100000 on ads during 2016 election
The Saudi-led Arab countries, also close USA allies, have presented Qatar with a list of 13 demands to restore relations, which the Qataris have so far rejected.
The Kuwaiti leader is thanking the United States for standing with their country when Iraq's Saddam Hussein launched an invasion.
Kuwaiti Emir Sheikh Sabah al-Ahmad al-Jaber al-Sabah (left) and US President Donald Trump meet in the Oval Office of the White House September 7, 2017 in Washington, DC. If we don't solve it, I will be a mediator right here in the White House.More news: European Union court orders Slovakia and Hungary to accept asylum-seekers
Trump initially appeared to side with Saudi Arabia, but then he instructed Secretary of State Rex Tillerson to support the Kuwaiti mediation effort.