Yeah, CREW is acting as a front for Obama's minions who are trying to set the stage for his further usurpation of legislative power.
The fact of the matter is that all of this chatter about the 14th Amendment is completely dishonest, since Section 4 has nothing to do with debt ceilings or budgets, but was a Civil War measure to destroy the credit and financial viability of the defeated Confederate States of America, and to also take care of that war's Union veterans. It also voided any potential claims that the Confederacy's creditors (including Britain) might make against the United States after the war.
Generally speaking, a prez that came out of Congress is more deferential to Congress while a prez that was a governor is more confrontational towards Congress.
What really shifts the relative power between the executive and legislative branches is misfeasance or malfeasance of a prez. Nixon's actions as prez resulted in Congress expanding its power over the prez.
For example, the Church Commission built a wall between the prez's agencies, CIA and FBI. Because Nixon was using these agencies to go after his political enemies.
Another example is Nixon used Impoundment excessively to try to control Congress' appropriations because he thought they were inflationary. Congress sued Nixon and won so since then all presidents lost the power of impoundment. Prez GW Bush used signing statements to try to claw back that power from Congress.