That is what my hypothetical is about, but it exists for the purpose of examining a very real situation that is going on right now, and I would guess has gone on in the past.
There are two high profile, much talked about, rules that are in the news today. One is "deem and pass", and the other is "reconciliation". One is a House rule. The other is a Senate rule. The Democratic leadership might use one or both of these rules in an attempt to get around the filibuster, which is also a Senate rule. A lot of people are saying that the way the Democrats are contemplating using those rules actually violates the rules of one or both houses of Congress.
It got me to wondering what would happen if that were the case. For example, there are certain conditions that have to be met in order to use the reconciliation rule. I don't know the exact details, but I know that the proposed legislation has to meet certain requirements about reducing the deficit. Therefore, they asked the CBO to score the bill so that it could be seen if it meets those requirements. Some Republicans are saying that the manner in which it was presented for scoring distorts the truth and that a realistic assessment would not show a deficit decrease, and would therefore not be eligible for reconciliation. If that's the case, but Democrats use it anyway, what is the Republican recourse?
So, that's the real situation that's really happening, but I don't want to get bogged down in the technical details of whether this specific bill raises or lowers the deficit. There's plenty of discussion about that going on elsewhere. What I am really wondering, for purposes of this thread, is what happens if the Democrats make use of those rules to avoid the filibuster, but do so in such a way that the Republicans claim that they broke the rules. To address that question, I created a hypothetical in which the issues were easily seen. I created a situation where there was no doubt at all about whether or not the rule was broken, but there was also no doubt at all about whether the legislation received a majority vote from both houses.
I think I know the answer. I think the rules are nothing more than gentlemen's agreements with absolutely no force of law. If one party feels that the other party violates the rules, their only recourse is to ask the Rules Committees of the House or Senate to make a ruling, and hope that the full Senate or House abides by the rules. If the majority decides not to act, and lets the violation occur, or, as may happen soon, the decision that the rule was violated is not handed down until after the legislation was passed and signed, I think that the legislation would stand, and the only penalty that would be faced by the rulebreakers is a potential backlash from voters at the ballot box.