Does Mandos have jurisdiction over men?

[Orald]

I don't care if you believe that Beren went to Mandos or not, it says he does, choosing to not believe is your choice, even though it is a wrong one.

The Silmarillion, p. 104:

Some say that they [Men] too go to the
halls of Mandos; but their place of waiting there is not that of the Elves,
and Mandos under Iluvatar alone save Manwe knows whither they go
after the time of recollection in those silent halls beside the Outer Sea.

This next one is also from the Silmarillion, p. 186:

For the spirit of Beren at her bidding tarried
in the halls of Mandos, until Luthien came to say her last farewell upon
the dim shores of the Outer Sea, whence Men that die set out never to
return.