> bias in the USA towards the predominant religious institution away from the minority ones

Are you sure that is the case at the federal level? Some states or governors may sometimes do something like you suggest, but I think at least the Supreme Court is more reasonable. Some examples here: https://en.wikipedia.org/wiki/First_Amendment_to_the_United_...

> In God, Yahweh, Allah, Buddah, et al we Trust

Some comments, a bit off topic:

* "In God We Trust" only became the US motto in 1956, presumably because of the "Red Scare"

* Allah = Christian God = Yahweh, so your proposed motto sounds stupid. (Though I think I read somewhere of a theory that the Torah is actually an aggregate work, so that different parts actually speak about different gods, or something like that...)