Well done, you've fallen for 300 year old political propaganda.
Here's the truth about your silly Jesuit Oath:
You and other like-minded nuts point to this document as being authentic, for the simple fact that it is recorded in the US Congressional Record. It is indeed recorded in the US Congressional Record. But unfortunately, being in the Congressional Record does not equate to being true. It only means that the words were spoken by a Congressman and recorded for record keeping. Here's the more detailed explanation:
So what we have is a document produced by a Congressional nominee during a heated election campaign. Thomas Butler was using this Oath to try and prove Eugene Bonniwell was an evil person due to his Roman Catholic beliefs. Both sides disavowed its authenticity. It was only included in a House Report summarizing an investigation of that election, because it was attached to a document submitted by one of the candidates. The Report was reprinted in the Congressional Record. None of that makes it true.
The source for the document was later found to be from an author named Robert Ware, who was known and the Forger, who penned "Foxes and Firebrands." Which was a work of satire.
http://www.newadvent.org/cathen/07698b.htm
Which was a known satirical work. You'll not find the Oath anywhere else.
tl'dr: It's been known fake for 300 years.