It is happening because the ruling establishment (both major politicial parties) see that demographic [no ethnic majority] easier to control and rule.
If Mark feels the same way as his guy Lonegan he should say so.
Steve Lonegan, a New Jersey Ted Cruz backer and former U.S. Senate candidate who was on the organizing call Thursday night, said that Republicans who do not believe Trump represents what the party stands for have a “moral obligation” to stop him in Cleveland next month.
“I will tell you, about every two hours people contact me about how to join this effort,” said Lonegan said. “This has never been done before, so there’s no textbook on how to do it. So we’re building an organic effort, state by state, to convince members of the Rules Committee to sign onto a rule that unbinds the delegates to vote their moral conscience.”
http://www.cnn.com/2016/06/17/politics/delegate-unbinding-effort-organized/