The very first thing the very first Congress did it at the very beginning

[midnight rambler]

1 Stat 23

https://uscode.house.gov/statviewer.htm?volume=1&page=23#

[midnight rambler]

Being the very first thing the very first Congress did in their very first session it MUST have been of VERY GREAT importance to the very first Congressmen.

Notice that it applies to ALL public officeholders, from the highest office to the lowest.

So why do NONE of them take this oath?? So they can betray the people??