He said many weapons have been smuggled to the Houthis through Hodeida and the small ports they control.
The UN has warned that an already catastrophic humanitarian crisis in Yemen was worsening each day that aid shipments remained blocked.
"This will have no impact on our operations once they resume", McGoldrick said in an email from Amman, Jordan.
While the language of the resolution calls to "increase efforts to adopt all necessary and appropriate measures to prevent civilian casualties and increase humanitarian access", it does not call for an end to USA support of the Saudi-led coaltion attacking Yemen.
An air raid by the Saudi-led military coalition fighting against the Houthi movement in Yemen shut down the airport in the capital Sanaa on Tuesday, further isolating the country where millions are on the brink of starvation, the state news agency SABA reported. Nine days ago, the Houthis launched a missile at the Saudi capital, Riyadh.
He said that a United Nations verification and inspection mechanism already in place could work with the Saudi-led coalition on implementing new procedures but that keeping ports closed in the interim was not viable.
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McGoldrick says access to such ports is "helpful" but that the key need is access to the rebel-held Red Sea ports of Salif and Hodeida, closer to large population centers. "Seven million people are already on the brink of starvation and the blockade will only bring them closer to it".
Al-Mouallimi also accused the Houthis of diverting humanitarian aid "to fulfill their own requirements" and "to trade in the black market and achieve exorbitant profits at the expense of the Yemeni people".
Those ports are in Yemeni cities of Aden, Mocha and Mukalla.
Medical officials said six soldiers were killed, with the death toll expected to rise.
Saudi Arabia is backing supporters of ousted President Abd-Rabbu Mansour Hadi against rebels called the Houthis, who are backed by Iran and allied with militants supporting former president Ali Abdullah Saleh.