Omnibus Budget Reconciliation Act of 1990…
“ In the Senate, an amendment that is otherwise in order shall be in order notwithstanding the fact that it amends the joint resolution in more than one place or amends language previously amended, so long as the amendment makes or maintains mathematical consistency. It shall not be in order in the Senate to vote on the question of agreeing to such a joint resolution or any amendment thereto unless the figures then contained in such joint resolution or amendment are mathematically consistent. ”
