Its a little late for this. Either he is working against Trump or he has no control or discipline over its members/politicians.
For Ben Sasse, Lindsey Graham and others to make the remarks they have- they should be stripped of any RNC money for reelection- or at least threatened until they shut up.
I think it’s worth pointing this out — it may well be the real reason for the GOPe’s ant-Trump efforts:
GOPe is in bed with the Democrats for a Hillary presidency.
See:
Tech billionaires (major Dem donors) plot with GOP leaders at exclusive island resort to stop Trump
Ben Sasse has the Ricketts money.