Some might say FDR, some might say LBJ, others might say Nixon. The reality is that the power of the Legislative vis a vis the Executive is in constant flux.
In terms of sweeping policy initiatives FDR's administration might be the time when the Presidency took on many of its contemporary roles. The activism of the LBJ administration was a further expansion of the New Deal-era role of the FDR administration. LBJ also was arguably the first president to use the US armed forces in foreign engagements without Congress declaring war (Gulf of Tonkin resolution)--a precedent we have become all too familiar with. In terms of 'imperial pretensions' Nixon assumed all the New Deal, Great Society, civil rights activism, and the ability to intervene militarily of the preceding Presidencies and expanded them to include unfettered use of the CIA and FBI.
Judicial Review is the power of the U.S. Supreme Court to review laws and actions from Congress and the President to determine whether they are constitutional. This is part of the checks and balances that the three branches of the federal government use in order to limit each other and ensure a balance of power.
Andrew Carnegie's company always remained at the top of the business world and was able to conquer and even destroy many other smaller companies. He easily became one of the richest men in the world. Andrew Carnegie retired from the steel industry in 1901 and focused his energy on philanthropy. He published his own book called The Gospel of Wealth.
