Carson does support amnesty. He meets the CofC test.
Karl is trying to take down Trump by supporting Carson
If true Rove must be able to convince a lot of wealthy people that it is in their interest to invest in the campaign of a candidate that has no chance of getting the nomination.
How many rich people are there that make of hobby of investing in failure.
They must think that Trump is truly a dangerous man if they are willing to invest major money to knock him out of the running.
There is always the risk in doing this that Carson could win. What is the downside of a Carson nomination and a Carson presidency? I don't see rich people investing in a scheme like this without weighing these possibilities.