The "easy way" isn't necessarily all that easy, as chexpool pointed out. The U.S. school I attended allows two retakes TOTAL throughout the first two years of medical school. More than that and you are dismissed (or withdraw, knowing that they will dismiss you). I know a handful of very intelligent students who have had to withdraw from medical school because they missed the cut-off for a class by one or two points. Several of them will find another path to becoming a physician, but it's not all peaches and cream in North America, either.

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MS (Health Sciences) - Brigham Young University
BA (German Language & Literature) - University of Oregon
Hospital Corpsman (Fleet Marine Force) - 2nd Marine Division

"Pains nor toils nor trials heeding, and in heaven's own time succeeding..."
Wm. E. Hickson (1803-1870)