Lyndon Johnson's Silver Start for example.
Yes, there was discrimination. Yes, recommendations for awards at the time that were denied should be reviewed to see if discrimination was the reason, if so then the recommendations need to be examed again. At face value.
Also awards that are egregious examples, the typewriter one and LBJ's among others need to be stricken.
IIRC, there was a review of Medals of Honor issued and many that were issued early on (To a bunch of milita troops that re-enlisted and Lincoln's Funeral guards) that clearly failed to meet the criteria were rescinded. Meanwhile, recommendations for those denied during the Bush Administration (5+ years of war and only 3 awarded, none living) didn't pass the smell test, nor the "average" number of awards in previous conflicts.
The whole if your an E-something to E-otherthing then you can only get an X medal, but if you are above those pay grades then you get a Y medal with extra doodad, is utter crap. You already get a campaign medal, getting a Bronze star for showing up, degrades those men that earned them by spilling blood (either their own or others) in prior confilcts. Stop it.