"When the President does it, that means that it is not illegal."—Richard Nixon

Presidents don't give up power.

Executive orders don't expire at the end of each presidential term.

And every successive occupant of the Oval Office since George Washington, who issued the first executive order, has expanded the reach and power of the presidency.

The Constitution invests the President with very specific, limited powers: to serve as Commander in Chief of the military, grant pardons, make treaties (with the approval of Congress), appoint ambassadors and federal judges (again with Congress' blessing), and veto legislation.

In recent years, however, American presidents have anointed themselves with the power to wage war, unilaterally kill Americans, torture prisoners, strip citizens of their rights, arrest and detain citizens indefinitely, carry out warrantless spying on Americans, and erect their own secretive, shadow government.

These are the powers that will be inherited by the next heir to the throne, and it won't make a difference whether it's a President Trump or a President Clinton occupying the Oval Office.

The powers amassed by each successive president through the negligence of Congress and the courts—powers which add up to a toolbox of terror for an imperial ruler—empower whomever occupies the Oval Office to act as a dictator, above the law and beyond any real accountability.

Consider some of the presidential powers—which have been acquired through the use of executive orders, decrees, memorandums, proclamations, national security directives and legislative signing statements and can be activated by any sitting president—that have allowed past presidents to operate above the law and beyond the reach of the Constitution.

The power to kill. As the New York Times concluded, "President Obama, who came to office promising transparency and adherence to the rule of law, has become the first president to claim the legal authority to order an American citizen killed without judicial involvement, real oversight or public accountability." Obama's kill lists—signature drone strikes handpicked by the president—have been justified by the Justice Department as lawful because they are subject to internal deliberations by the executive branch. "In other words," writes Amy Davidson for the New Yorker, "it's due process if the President thinks about it."

The power to wage war. Ever since Congress granted George W. Bush the authorization to use military force in the wake of 9/11, the United States has been in a state of endless war without Congress ever having declared one. Having pledged to end Bush's wars, Barack Obama has extended them. As the New York Times notes, "He has now been at war longer than Mr. Bush, or any other American president… he will leave behind an improbable legacy as the only president in American history to serve two complete terms with the nation at war." More than that, as the Atlantic makes clear, "Obama is inaugurating an era of unbridled war-making by the commander in chief, without any of the checks and balances contemplated by the American constitutional system."

The power to torture. Despite the fact that the Bush Administration's use of waterboarding as a torture tactic was soundly criticized by Obama, the Obama Administration refused to hold anyone accountable for participating in the rendition and torture programs. In the absence of any finding of criminality, the authorization of such torture tactics remain part of the president's domain—should he or she ever choose to revive it.

The power to spy on American citizens. In the wake of the 9/11 terror attacks, President Bush secretly authorized the National Security Agency to carry out surveillance on Americans' phone calls and emails. The Bush Administration claimed that the Constitution gives the president inherent powers to protect national security. The covert surveillance has continued under Obama.

The power to indefinitely detain American citizens. In 1942, President Franklin D. Roosevelt issued an executive order requiring that all Japanese-Americans be held in internment camps. While that order was later rescinded, the U.S. Supreme Court declared it to be constitutional. The ruling has never been overturned. Pointing out that such blatantly illegal detentions could happen again—with the blessing of the courts—Justice Scalia warned, "In times of war, the laws fall silent." In fact, each National Defense Authorization Act enacted since 2012 has included a provision that permits the military to detain individuals—including Americans citizens—indefinitely without trial.