"I know that the US is concerned about the ongoing situation there," State Department Spokesperson Heather Nauert told reporters at her daily news conference.
She was responding to questions on India China border standoff in the Sikkim sector for more than a month now.
"We believe that both parties, both sides should work together to try to come up with some better sort of arrangement for peace," Nauert said.
Doka La is the Indian name for the region which Bhutan recognises as Dokalam, while China claims it as part of its Donglang region.
Of the 3,488-km-long India-China border from Jammu and Kashmir to Arunachal Pradesh, a 220-km section falls in Sikkim.