Trump hasn't repeated that cost lately and Qatar has since taken steps to deal with US considerations.
On the sidelines of the event, Sheikh Hamad al-Thani also said that "Qatar Taxi will pursue several strategic partnerships with ministries and authorities in addition to launching a wide range of offers to meet the needs of the society".
The Persian Gulf Arab country is a long-standing American military ally and host to the largest U.S. air base in the Middle East. Al-Udeid air base also houses military personnel from the United Kingdom and other allies.
As Qatar's ruling emir visited the White House on Tuesday, the fruits of that labor began to show.
Last June, Trump backed Saudi Arabia and the UAE's hard-line rhetoric against neighbour Qatar in a tweet.
Qatar has denied all those charges, and then-Secretary of State Rex Tillerson urged the president to adopt a more neutral stance in the crisis.
A top fundraiser for Trump also filed a lawsuit last month against Qatar and lobbyists working for the state, alleging they hacked his and his wife's emails as part of the ongoing dispute.
Qatari Emir Tamim bin Hamad Al Thani, in his turn, has stated that he agrees with US President Donald Trump that chemical attacks allegedly conducted by the government of Syrian President Bashar Assad should not be tolerated. A lot of countries were funding terrorism and were stopping it.
There have been other signs that Trump is warming to the Qataris.
Qatar has sought to stress its role as a reliable and agreeable USA partner in a strategically vital region.
His visit comes after Saudi crown prince Mohammed bin Salman conducted a successful three-week U.S. visit.As a warmup to the visit, the State Department approved the sale of 5,000 Advance Precision Kill Weapon Systems (APKWS) to Qatar, including 5,000 high explosive warheads.
The Emir said Trump "has been very helpful in supporting us during this blockade", and thanked the American people for being "very supportive".
Information for this article was contributed by Ken Thomas of The Associated Press.