They say that elephants never forget, but that's exactly what the Grand Old Party has done. Between the 1950s and 1970s, Rockefeller and Nixon Republicans kept the party in a seemingly permanent minority with a "me-too" philosophy that allowed Democrats to balloon the size and scope of government. But, when Ronald Reagan ran unashamed on conservative principles in 1980 and Republicans in Congress embraced bold conservative reforms in 1994, America responded with overwhelming approval. Since then, many Republicans have run for office as conservatives but governed as scandal-plagued big-spending moderates. They stopped offering common-sense solutions and broke promises with Americans...