Op-Ed: A presidential run by Michael Bloomberg could plunge the country into a constitutional crisis

In the next couple of weeks, Michael R. Bloomberg will decide whether to launch an independent bid for the presidency. That’s an enticing prospect, since the continuing strength of Donald Trump and Bernie Sanders threatens to force a radical choice between two extremes. Nevertheless, before succumbing to centrist temptation, the former New York City mayor should take a hard look at the Constitution. He will find that his run for the White House could precipitate one of the worst constitutional crises in American history.

The problem is the 12th Amendment. Enacted in 1804, it establishes the rules for presidential selection if no candidate secures a majority of 270 electoral votes — a distinct possibility should Bloomberg enter the race. The sphere of competition will then move from the states to the House of Representatives, where Bloomberg will confront formidable challenges. He will have to persuade Republican and Democratic lawmakers to betray the tens of millions of loyalists who voted for their party’s nominee. But he’ll have to do more than gain a majority of House members. Under the amendment’s special rules, each state delegation casts a single vote, and the winning candidate must convince 26 delegations to support him. Even if Bloomberg carries a few key states in November, his fate will be determined by representatives from regions that rejected his candidacy. In addition, there are 11 states with only one or two House members — and their idiosyncratic views will have a disproportionate say in the final choice.

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Worse yet, if a state’s delegation is equally divided, it can’t vote at all. This means that the process will degenerate into a free-for-all as rival candidates engage in desperate efforts to nudge one or another fence-sitter in their direction.

At this point, a final factor will make for more melodrama. If the House can’t pick a chief executive by Jan. 20, the amendment provides an interim remedy. It says that the new vice president will become acting president while the political bargaining continues.

The three vice presidential nominees will be in the same position as their running mates — none will have gained a majority of the electoral college. Anticipating this eventuality, the authors of the 12th Amendment designed another system for resolving the vice presidential contest.

Under this secondary scheme, it’s the Senate, not the House, that does the deciding, and a simple majority of senators suffices to make the choice. But the Senate can choose only between the top two, not the top three, candidates. As a consequence, Bloomberg’s running mate might be barred from the competition from the start.

In any event, the major party in control of the Senate will almost certainly install its own candidate, not Bloomberg’s. Suppose, for example, that the Democrats regain control of the Senate and put Sanders’ running mate, Elizabeth Warren, into office. This might shock the previously paralyzed House into action: Perhaps the Republicans would abandon Trump and support Bloomberg in a desperate effort to save the country from Warren?

The emergence of a Bloomberg-Warren pairing illustrates a larger point. Given the arcane constitutional rules, the only way for Bloomberg to win is by manipulating procedures that will be utterly mysterious to the overwhelming majority of ordinary citizens. If the multibillionaire does succeed in backroom deals that procure him the presidency, his ascent will serve only as a dramatic display of the power of Wall Street to lord it over the American people.

Such a victory will have devastating consequences. Consider how the tea party pressured congressional Republicans to make life difficult for Obama. Life will be even more difficult for Bloomberg, who will also contend with the disappointed “political revolutionaries� among the Democrats inspired by Sanders. As the struggle between Congress and the president escalates, ordinary Americans will turn away in despair. This massive wave of alienation will permit the extreme right and the far left to become even more powerful forces in the next presidential election — with Trump and Sanders, or their successors, taking over both parties and competing with each other in their radical programs to sweep away the Washington elite.

The time for Bloomberg to consider this grim future is now. He has always presented himself as a thoughtful pragmatist who disdains ideological posturing. But only the blindest follower of Antonin Scalia — the most adamant constitutional originalist — can fail to recognize that the 12th Amendment, passed during the presidency of Thomas Jefferson, can’t cope with the realities of modern politics.

If Bloomberg is a true patriot, he will not allow his personal ambition to throw the United States into a grave constitutional crisis.

Bruce Ackerman described the historical origins of the 12th Amendment in his book “The Failure of the Founding Fathers.� He is a professor of law and political science at Yale and was a spokesman for Al Gore before the Florida Legislature in 2000.

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