'unanimous consensus' is a correct and usable phrase in written English.
You can use it to describe when all members of a group have come to an agreement on the same thing, for example: "The board of directors reached a unanimous consensus on the new project proposal."
Why such unanimous consensus?
There is a nearly unanimous consensus that George Washington was the Foundingest Father of them all.
He adds that the "unanimous consensus" of Mr. Kennedy's team of doctors is that "his disease is totally under control".
Larger asbestos exporters such as Russia, Brazil, Kazakhstan or China, can still prevent a decision that requires unanimous consensus.
This argument seems to be pushing for the need to have unanimous consensus that a boycott is required before it is called for.
President Trump has repeatedly dismissed allegations that Russia tried to sway the election — as a "hoax" or fake news — despite the unanimous consensus of the intelligence community.
But after two weeks of intensive negotiations — already in overtime after bartering last July failed — participants said the prospect for unanimous consensus among member states remained uncertain.
After three years of writing, casting, and rehearsing, "Lestat" had a Christmastime tryout in San Francisco, where, by almost unanimous critical consensus, it was a disaster.
Nevertheless, even assuming that we could achieve (near) unanimous clinical consensus regarding how to interpret the severity of risks and harms, it should lead us to conclude that the informed consent process for ECT need only ensure patients are provided with a comprehensive list of potential side effects.
While stating that the unanimous scientific consensus is that GM crops are safe, the report, whose authors include prominent plant biologists and biotechnologists, criticizes the European Union for regulation that has fettered progress of the technology and risk assessments that have been "influenced by political considerations that do not have a scientific basis".
Potential never events were only included on the candidate list if there was unanimous group consensus that each event fully satisfied all of the criteria.
