Senate Majority Leader Harry Reid (D-NV) talks about how he enjoys hearing the pledge of allegiance at the beginning of the Senate session, however does not say "under God." Instead, he says "one nation, indivisible."
While many are incensed at this omission...
And exactly what part of the Constitution are these "many" having a problem with...
Article VI - Debts, Supremacy, Oaths
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The Senators and Representatives before mentioned, and the Members of the several State Legislatures, and all executive and judicial Officers, both of the United States and of the several States, shall be bound by Oath or Affirmation, to support this Constitution; but no religious Test shall ever be required as a Qualification to any Office or public Trust under the United States.