America is mired in three wars. The past decade was the hottest on record. Unemployment remains stuck near 9 percent, and there’s a small, albeit real, possibility that the U.S. government will default on its debt. So what’s dominating the news? A reality-television star who can’t persuade anyone that his hair is real is alleging that the president of the United States was born in Kenya.

Perhaps this is just the logical endpoint of two years spent arguing over what Barack Obama is — or isn’t. Muslim. Socialist. Marxist. Anti-colonialist. Racial healer. We’ve obsessed over every answer except the right one: President Obama, if you look closely at his positions, is a moderate Republican of the early 1990s. And the Republican Party he’s facing has abandoned many of its best ideas in its effort to oppose him.

If you put aside the emergency measures required by the financial crisis, three major policy ideas have dominated American politics in recent years: a plan that uses an individual mandate and tax subsidies to achieve near-universal health care; a cap-and-trade plan that attempts to raise the prices of environmental pollutants to better account for their costs; and bringing tax rates up from their Bush-era lows as part of a bid to reduce the deficit. In each case, the position that Obama and the Democrats have staked out is the very position that moderate Republicans have staked out before.

Take health-care reform. The individual mandate was developed by a group of conservative economists in the early ’90s. Mark Pauly, an economist at the Wharton School of the University of Pennsylvania, was one of them. “We were concerned about the specter of single-payer insurance,” he told me recently. The conservative Heritage Foundation soon had an individual-mandate plan of its own, and when President Bill Clinton endorsed an employer mandate in his health-care proposal, both major Republican alternatives centered on an individual mandate. By 1995, more than 20 Senate Republicans — including Chuck Grassley, Orrin Hatch, Dick Lugar and a few others still in office — had signed one individual mandate bill or another.

The story on cap and trade — which conservatives now like to call “cap and tax” — is much the same. Back then, the concern was sulfur dioxide, the culprit behind acid rain. President George H.W. Bush wanted a solution that relied on the market rather than on government regulation. So in the Clean Air Act of 1990, he proposed a plan that would cap sulfur-dioxide emissions but let the market decide how to allocate the permits. That was “more compatible with economic growth than using only the command and control approaches of the past,” he said. The plan passed easily, with “aye” votes from Sen. Mitch McConnell and then-Rep. Newt Gingrich, among others. In fact, as recently as 2007, Gingrich said that “if you have mandatory carbon caps combined with a trading system, much like we did with sulfur . . . it’s something I would strongly support.”

As for the 1990 budget deal, Bush initially resisted tax increases, but eventually realized they were necessary to get the job done. “It is clear to me that both the size of the deficit problem and the need for a package that can be enacted require all of the following: entitlement and mandatory program reform, tax revenue increases, growth incentives, discretionary spending reductions, orderly reductions in defense expenditures, and budget process reform,” he said. That deal, incidentally, was roughly half tax increases and half spending cuts. Obama’s budget has far fewer tax increases. And compared with what would happen if the Bush tax cuts were allowed to expire in 2012, it actually includes a large tax cut.

The normal reason a party abandons its policy ideas is that those ideas fail in practice. But that’s not the case here. These initiatives were wildly successful. Gov. Mitt Romney passed an individual mandate in Massachusetts and drove its number of uninsured below 5 percent. The Clean Air Act of 1990 solved the sulfur-dioxide problem. The 1990 budget deal helped cut the deficit and set the stage for a remarkable run of growth.

Rather, it appears that as Democrats moved to the right to pick up Republican votes, Republicans moved to the right to oppose Democratic proposals. As Gingrich’s quote suggests, cap and trade didn’t just have Republican support in the 1990s. John McCain included a cap-and-trade plan in his 2008 platform. The same goes for an individual mandate, which Grassley endorsed in June 2009 — mere months before he began calling the policy “unconstitutional.”

This White House has shown a strong preference for policies with demonstrated Republican support, but that’s been obscured by the Republican Party adopting a stance of unified, and occasionally hysterical, opposition (remember “death panels”?) — not to mention a flood of paranoia about the president’s “true” agenda and background. But as entertaining as the reality-TV version of politics might be, it can’t be permitted to, ahem, trump reality itself. If you want to obsess over origins in American politics, look at the president’s policies, not his birth certificate.