Is Obama an Imperial President?

According to the Christian Science Monitor: The president (or his administration) has ignored the Constitution, doing all the following with his pen and paper:

• Unilaterally changed elements of the Affordable Care Act (ACA) (seven times they made changes to this act without the support of Congress)
• Declared an anti-gay-rights law unconstitutional
• Lifted the threat of deportation for an entire class of undocumented immigrants
• Bypassed Senate confirmation of controversial nominees
• Waived compliance requirements in education law
• Altered the work requirements under welfare reform

Also, according to the monitor:

Early in his presidency, Obama also expanded presidential warmaking powers, surveillance of the American public, and extrajudicial drone strikes on alleged terrorists outside the United States, including Americans – going beyond Mr. Bush's own global war on terror following 9/11. But more recently, he has flexed his executive muscle more on domestic policy. In the process, Obama's claims of executive authority have infuriated opponents, while emboldening supporters to demand more on a range of issues, from immigration and gay rights to the minimum wage and Guantánamo Bay prison camp. To critics, Obama is the ultimate "imperial president," willfully violating the Constitution to further his goals, having failed to convince Congress of the merits of his arguments. To others, he is exercising legitimate executive authority in the face of an intransigent Congress and in keeping with the practices of past presidents. The course of Obama's final three years in office, in which he has promised continuing assertive use of executive action, will be shaped by this debate.

In his State of the Union Address last week he promised to act if Congress refuses to act.  To me, this is the scariest thing a president ever said.  If Congress disagrees with him, he doesn't care.  He basically said he has no respect for the Constitution nor the rule of law.