Is having "In God We Trust" on money, buildings, etc. constitutional?

[Secular humanist]

The very question is formed incorrectly. It places value on the constitution that it does not have. The constitution can be changed and is therefore not absolute. More correct question would be whether the text serves any real purpose in modern american society, or if it is actually a hinderance to national unity.

My personal oppinion ofcourse is that the text should be removed without hesitation. Religion has no place in politics as modern society consists of hundreds of religions. If one is prioritized and placed above, it is discriminatory towards others. No matter what or who your god is, I am sure he/she/it would wish all humans happy regardless their religion. If not, I'd seriously consider what kind of god I were worshipping.

On a broader view I'd like to point out that the political question of religion holds more important topics than what is scribbled on american currency.