A big showdown between Wall Street-loving billionaires broke out when Mitt Romney called Donald Trump a fraud.

Truth is, Mitt Romney is a fraud, too, and watching him is like seeing the pot call the kettle black -- especially on immigration matters when Mitt Romney supported self deportation ideas during his run in 2012.

Here are some bullet points with regard to Mitt Romney's past:

On abortion -- Full Flop. From "I believe that abortion should be safe and legal in this country" to "I am firmly pro-life."

On signing a no-tax pledge -- Full Flop. As a gubernatorial candidate in Massachusetts, he refused to sign a pledge that he would not seek tax increases. As a presidential candidate, he signed it.

On support for Ronald Reagan's policies -- Full Flop. As a Senate candidate in Massachusetts, he distanced himself from Reagan. As a presidential candidate, he's embraced the Gipper.

On whether humans contribute to global warming -- Half Flip. He said be believed humans contribute to climate change, but then hedged.

On gun policy -- Half Flip. Romney’s downplayed his signing of an assault weapons ban as governor in 2004, but it’s not clear that his policies have shifted as much as his rhetoric has.

On the economic stimulus -- Half Flip. Romney supported having a stimulus, but criticized the specific program Obama and congressional Democrats enacted.

On the Troubled Asset Relief Program (TARP) -- No Flip. Romney’s view has been consistent -- TARP was necessary, but some of its operational aspects were bungled.

On support for gay marriage -- No Flip. Romney expressed some relatively liberal positions on gay rights while campaigning for senator in 1994, but he never went as far as backing same-sex marriage.

Here are a few of Donald Trump's Flip Flops from the WaPOST:

1. Afghanistan

At first he said: Entering Afghanistan was "a terrible mistake"

"We made a terrible mistake getting involved there in the first place," he told CNN's "New Day" on Oct. 6. He added: "At some point, are they going to be there for the next 200 years? At some point what's going on? It's going to be a long time."

180: I've never said it was a mistake

"Iraq was a disaster," he told CNN's "New Day" on Tuesday. "Not Afghanistan, because that's probably where we should have gone in the first place."

When pressed by CNN's Alisyn Camerota on his change of position, he said: "We made a mistake going into Iraq. I've never said we made a mistake going into Afghanistan."

2. Syrian refugees

At first, he said: "You have to" accept them

"I hate the concept of it,"Trump told Fox News's Bill O'Reilly on Sept. 9. but on a humanitarian basis, with what's happening, you have to" accept the refugees. "They're living in hell." 

90 degrees: Focus more on our own problems

A day later, Trump told CNN after a rally on Capitol Hill against President Obama's Iran nuclear deal that the United States should probably focus on its own problems here at home rather than accept so many refugees.

"I think we should help, but I think we should be very careful because frankly, we have very big problems," he said. "We're not gonna have a country if we don't start getting smart."

180: I will send them back

Less than a month later, Trump told supporters at a campaign rally and said on Fox News that accepting the estimated 10,000 refugees President Obama has agreed to take could result in "one of the greatest military coups of all times." He suggested that the refugees would be terrorists who could strike the homeland from within and that he would send the refugees back if he became president.

"If I win, they're going back," he said.

3. Planned Parenthood

At first, he said: "Absolutely they should be defunded"

Those were Trump's words to Blaze TV in July shortly after an anti-abortion group released videos of officials with the nonprofit women's health care organization talking about what to do with aborted fetal tissue. (Planned Parenthood officials maintain they did nothing wrong.)

In an Aug. 3 interview with conservative radio show host Hugh Hewitt, Trump reiterated that he supported conservatives even shutting down the government in a bid to cut off Planned Parenthood from some $500 million in public funds.

180: Keep it funded

A week and a half later, Trump told CNN he opposes taxpayer dollars going to abortions but said he'd probably keep the money flowing to Planned Parenthood because of all the  "good" things the women's nonprofit health care clinic does.

4. Military spending

At first, he said: "I want to build up the military so nobody messes with us."

Days before the first Republican presidential primary debate in early August, Trump answered critics who said he had no specific policies by saying he'd spend to rebuild the military to "its height."

180: Cut spending

Almost exactly two months later, Trump told NBC's Chuck Todd  on Oct. 4 he still believes in a strong military -- but that he'd get there by cutting funding for it. "We can do it for a lot less," he said.

"'I'm gonna build a military that's gonna be much stronger than it is right now," he said. "It's gonna be so strong, nobody's gonna mess with us. But you know what? We can do it for a lot less."

 Donald Trump counters Mitt Romney's attack by attacking his manly ego and calling him "afraid" to run for President.  Will Romney take Trump's bait?  This would certainly split up the vote, and unfortunately Mitt Romney's flip flopping past would haunt him again.  Romney could not beat President Obama because he could not be trusted by the American voters.