Originally Posted by DrCosmic
SHIELD would send Cap, and every explanation for why he wasn't sent is totally fan-made. It's a plot hole. -shrug-
While it isn't explicitly stated, it can be pretty easily inferred that the HYDRA faction within SHIELD were pulling the appropriate strings required to keep SHIELD (Cap et al) away from the events of IM3.
There's a difference between what can be logically inferred from the events of CA:TWS and a fan-manufactured plot-hole. Not everything needs to be explicitly stated, unless every Marvel movie is to be turned into a lumbering exposition dump.