Earlier quoted context omitted.
You don't need to ratify a treaty through reconciliation. There's no need for this to be done with a formal treaty. It could simply be each of the nations passing laws that do the same thing. If the Senate passes a law that changes the corporate tax rate to a certain amount, that is a budgetary measure that could absolutely be passed with reconciliation. Yes, this law wouldn't be a treaty, but it could have a similar…
> If the Senate passes a law that changes the corporate tax rate to a certain amount, that is a budgetary measure that could absolutely be passed with reconciliation. If it was revenue-neutral, sure. That is unlikely to be the case with changes to corporate tax rates. And even then, you are going to have a hard time getting even 50 votes.
No, revenue-neutrality doesn't weigh in favor of being eligible for reconciliation; a measure must principally address either spending, revenue, or the debt limit to be eligible for that process.