Mitt Romney’s recent swipe at President Obama — the former Massachusetts governor has dubbed the president’s heartland bus trip the “Magical Misery Tour” — is grossly unfair . . . to the Beatles. John Lennon, before his untimely death in 1980, is said by a former assistant to have made it abundantly clear that, were he a citizen of the United States, he would have cast his ballot in the November election for, yes, Ronald Wilson Reagan.