As a showdown looms over judicial nominees, both sides of the aisle turn to the Constitution.
Wrapped in the sanctity of the US Constitution, the debate over the "nuclear option" to end judicial filibusters sounds patriotic, almost noble.
Republicans say they are protecting the nation from a minority of Democratic senators seeking to impose a 60-vote supermajority on judicial confirmations when the Constitution requires only 51 votes.
Democrats say they are protecting the nation from an attempt by the Republican majority to undermine the framers' careful design of checks and balances within the Senate.
On one level, the deadlock over President Bush's appeals-court nominees, and the related debate over the so-called nuclear option, increasingly resembles a "political game of chicken," as one analyst puts it. But by presenting constitutional themes and invoking the work of the Founding Fathers, senators on both sides of the aisle are escalating the confrontation beyond mere politics.
"Constitutional politics" is how Michael Les Benedict, a legal historian at Ohio State University in Columbus, views it. "It raises the matter to an issue of principle," he says.
So who holds the constitutional high ground? As in most high-stakes disputes involving fundamental issues, a range of compelling arguments support both sides.
The debate revolves around three related provisions: the Constitution's advice and consent clause, the congressional rules clause, and Senate Rule V.
Article II, Section 2, of the Constitution says in part that the president shall have the power to nominate and appoint judges "by and with the advice and consent" of the Senate.
While the same clause requires a two-thirds Senate vote to ratify treaties, it sets no specific requirement for judicial confirmation.
That suggests that it takes a simple majority of 51 votes to confirm a judge, which has been the historic practice. But some legal analysts say that nothing in the Constitution prevents the Senate from setting a higher standard.
The Constitution also says in Article I, Section 5: "Each House [of Congress] may determine the rules of its proceedings." Senate rules permit members to engage in filibusters to stall judicial confirmation votes. Under Senate Rule XXII, even though only 51 votes are needed to confirm a nominee, it takes at least 60 votes to end a filibuster. In addition, the rule says any attempt to change a Senate rule requires the support of two-thirds of the senators "present and voting" (67 votes if all 100 senators are participating).