The grassroots have always chose the delegates, and the delegates choose the candidates - without a candidates ability to cut various delegates out of the process!
They want the candidate chosen by GOP 'insiders' to be able cut out delegates they think might not vote for them! That's what the Democrats do - and we don't want the GOP moving that direction in ANY WAY!
This is “Romney” at work. Trying to ensure his 2016 run. Already trying to shut out a possible challenge.