Mitt Romney’s White House bid took another blow last night after he appeared to suggest a pro-Iranian terrorist could hold America to ransom by threatening to blow up Chicago with a nuclear bomb. In one of the most bizarre remarks ever made by a presidential candidate, the Republican challenger outlined how he might carry out an attack – comments critics claimed exposed America’s weaknesses. They were revealed just hours after videotapes of Mr Romney showed him making a series of derogatory remarks about Americans, Palestinians, Mexicans and the Chinese. Scroll down for video Caught on tape: Mitt Romney shares his laissez-faire approach to solving the 'Palestinian Problem' at a dinner for wealthy donors in Boca Raton, Florida
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Republican presidential candidate was secretly filmed at a $50,000-a-plate dinner for wealthy party donors
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Romney is shown suggesting a terrorist could hold America to ransom by threatening to blow up Chicago
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In another clip he describes Democratic voters as 'freeloaders who don't pay taxes'
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Romney launches counteroffensive by pointing to newly-found 1998 clip of Obama saying he favors 'redistribution of wealth'
broadside at the Palestinians,  saying: ‘I look at the @placeholder not