For the USA most of the time a credential evaluation by a US evaluator is necessary as for all foreign degrees. Each university has its own recognition procedure, therefore no university can guarantee that its degrees will be accepted all over the world.
Please have look on the US-EU treaty of cooperation in higher education.
A University Professor in a Public US university wrote:
“I received my diploma and I am happy…thank you, thank you the Dean of the university is satisfied, the administration is certain to pass well the accreditation… My evaluations were excellent, now there is the degree in French language. I will be able to change my title of “Visiting Professor” to “Associate Professor”. I would like now to continue with you to obtain a doctorate…”A University Professor in a Public US university