From his perch as the top Republican on the House Oversight and Government Reform Committee, Issa has spent the last 15 months constantly blasting the Obama administration on nearly every controversy and calling for countless investigations that the Democratic-controlled committee refuses to order.

But Issa is finally starting to hit some of his targets. He was one of the leading Republicans in pushing the White House to reveal more details about its discussions to persuade Rep. Joe Sestak (D-Pa.) to forgo a Senate primary run against Sen. Arlen Specter (D-Pa.) in return for a possible government job. Sestak won the primary, and now another Senate candidate challenging an incumbent Democrat, Andrew Romanoff in Colorado, has acknowledged having similar discussions with White House officials. Issa has suggested the White House violated the law and may have offered Sestak "a bribe" in the process, assertions that have not been proved.

Issa, however, is not a single-issue attack dog. He has shown that he will go after Obama from multiple directions:

He is also demanding the administration release details of Cabinet officials' travel to events that might benefit Democratic candidates, continuing to cast Obama as embracing "politics as usual."

"It is abundantly clear that this kind of conduct is contrary to President Obama's pledge to change 'business as usual' and that his administration has engaged in the kind of political shenanigans he once campaigned to end," he said.

Veteran journalist Robert Parry has written numerous times at Consortium News about Bill Clinton's decision to let apparent crimes of the Reagan and Bush I presidencies go uninvestigated. Republicans rewarded Clinton by promptly launching investigations of the president when they took back Congress in 1994. Clinton was hampered for the final six years he was in office, and his presidency never fully recovered.

Parry writes in a recent piece at Consortium News and Truthout that Obama appears to be heading down the same path:

If Republicans gain control of at least one house of Congress, they would surely launch a wave of investigations against Obama, much as the GOP did against Clinton.

Unlike the Democrats who shy away from investigative controversies--turning their backs even on historic scandals such as Iran-Contra, Iraq-gate and contra-cocaine trafficking in the 1980s as well as George W. Bush's torture abuses and illegal wars last decade--the Republicans have no such qualms.

This could have a profound impact on an American middle class that already is suffering in the Great Bush Recession. By letting Bush criminals off the hook, and setting the stage for a thug like Issa to possibly come to power, Obama is likely to throw an anchor to a middle class that already is on the verge of drowning. Writes Parry:

So, with Obama embattled and the Democratic congressional majorities likely to shrink or disappear, the chances for the United States to confront its structural problems will only worsen.

With unemployment staying high, many middle-class Americans will sink into a growing under-class. The rich will fight to keep as much of their oversized salaries and bonuses as possible, with the Republicans ensuring that the one political sure-thing will be that legislated tax increases won't happen.

Indeed, the simplest way to address the nation's myriad of problems by restoring the marginal tax rates for the rich back to the historical levels of, say, the Kennedy era (around 60 percent on their top income) is the one thing that is almost impossible to contemplate.

Parry says America desperately needs a president who will challenge right-wing orthodoxy and educate the public about the road to sustained prosperity. Obama increasingly is showing that he doesn't have the stomach for such a challenging task:

Though the Republican vision of the future appears to guarantee a continued decline in the quality of American life, the Right's propaganda machinery makes any suggestion about the need to tax the rich more heavily akin to socialism. The Revolutionary War slogan, "no taxation without representation," has been transformed to something close to "no taxation, period."

Remember the famous encounter between candidate Obama and "Joe the Plumber," who decried Obama's idea about the need to redistribute wealth from the upper-income levels to middle- and working-class Americans so the economy would work better.

That debate remains at the center of America's economic struggles, as it has been since the Great Depression when income inequality and financial speculation were two key factors in the mass unemployment that followed the Crash of 1929. Two lessons learned were that a strong middle class and reasonable government regulations were necessary for a healthy economy.

What are the keys to American prosperity? A strong middle class and reasonable government regulations. Obama is a smart guy who clearly knows that. And he should be smart enough to know that the best route to prosperity requires investigations of GOP criminals, showing that modern conservatism is a damaged brand that is leading our nation toward ruin.

You simply cannot seek bipartisan solutions with a Republican Party that has become grotesquely dysfunctional. Obama has had roughly 19 months to help educate the public about the dangers of modern conservatism. But he has failed to do it.

That has left an opening for the likes of Darrell Issa to take center stage. If that happens, Obama's opportunity probably will be gone for good.