The legislative branch has seemingly been quite content with the status quo.
In many ways, it works very well for legislators. They relieve themselves of all responsibility "not my fault, the administrators did it" and gain the power to push for mercy in individual cases, with their access to the regulators "see what I did for you!" (Constituent services).
What Obama did with the continuing resolution is remove the last bits of power of the purse from the legislature. Without the ability to threaten to cut funding, Congress lost any control over the administrative bureaucracies, especially the intelligence agencies, who already had little control.