The diplomat had recently led a high-level US delegation to Myanmar and Bangladesh, where he visited refugees camps and met officials. He had described the situation on the ground as "serious" and the scale of problem as "immense".
US Secretary of State Rex Tillerson is scheduled to visit Myanmar early next week to hold talks with both the civilian and military officials.
Since August, more than 600,000 Rohingya Muslims have landed in neighbouring Bangladesh due to alleged atrocities by the security forces in Myanmar's Rakhine State.
Given the strain that the refugees crisis has been putting on its economy, the Bangladesh government has been in talks with the government of Myanmar for the return of the refugees.
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"I am not going to comment on the relations between the two countries other than to say that we support their talks and they have already held and further talks on solving the Rohingya issue," Acting Assistant Secretary of State for Population, Refugees, and Migration Simon Henshaw told reporters during a teleconference with South Asian media this week.
"On the actions of the Bangladeshi government, we much appreciate them and praise the effort they've made to deal with this huge number of people coming into their country," he said, adding that the American delegation spoke with a number of different ministries when they were there.
"We urge the Myanmar government to act to restore the rule of law, protect local populations and investigate alleged human rights abuses and violations and to hold those responsible, accountable," he said.
The official welcomed the government's plans for repatriation and encouraged them to implement a peace plan soon as possible emphasising the importance of creating safe conditions that would allow refugees to voluntarily return to their villages.
The US delegation, during its visit to Bangladesh, had met with government officials, international organisation and NGOSs and visited refugee camps near Coxes Bazaar, which he said was so shocking.
"People were suffering. Many refugees told us through tears accounts of seeing their villages burned their relatives kill in front of them. Some of them recalled being shot at as they fled. Despite this trauma many expressed a strong desire to return to their homes in Burma provided that their safety security and rights could be guaranteed," Henshaw said.