In this article from NASASpaceflight.com describing a recent status update from NASA of its SLS/Orion program (which remains years behind schedule and might see further delays) was the following quote, revealing much about NASA’s incompetence and corruption in building this boondoggle:

In contrast to the more centralized organization structure for the cancelled Constellation program, [SLS’s] three major programs [ground systems, Orion, and SLS] are managed independently: Exploration Ground Systems (EGS) based at KSC, Orion based at the Johnson Space Center (JSC) in Houston, Texas, and SLS based at the Marshall Space Flight Center (MSFC) in Huntsville, Alabama.

Each of the programs has resources to integrate with its other two partners, but ESD [Exploration Systems Development at NASA headquarters in DC] provides the overall coordination between all three. During Constellation, the equivalent organizations were projects directly managed by that now-cancelled program. [emphasis mine]

In other words, when Obama unilaterally cancelled Constellation (something he really didn’t have the power to do) and Congress micromanaged its reinstatement (creating SLS/Orion), the Obama administration and NASA abandoned a sensible management structure and allowed SLS/Orion to be a three-headed monster, difficult to coordinate and certain to go over-budget and fall behind schedule.

With this operational structure, even if SLS eventually flies successfully, it will be impossible for it to operate efficiently. Expect every one of its future efforts to always go over budget and to fall behind schedule.