Originally Posted by
Often1
It's irrelevant. He needs both a valid passport and a visa. He has the visa, but not the passport. He lacks the passport because it is unsigned and thus he was denied boarding. Properly.
The political discourse is as inappropriate for this forum as it is for the LH ground personnel and contractors.
The passport is valid by all governments, including USA and Switzerland and UAE, with the exception of the German one, which it has already gave him a visa on that passport and he used it to enter germany

That's absurd.