After Republicans drifted for years without a pilot, Sens. Ted Cruz and Mike Lee have taken the helm of the GOP, steering their party and its grassroots into a much-needed, head-on battle with the Democrats. On the campaign trail on the way to his win in November 2012, President Barack Obama promised to finish the work he’d gone to Washington to do: “fundamentally transforming the United States.” Things look tough for the right in Washington today, but the reality is these three conservative Republicans, aided by friends in the Senate and the House, have dragged the president’s ambitious agenda to...