Both former President Bushes refuse to endorse Donald Trump:

Bush 41, who enthusiastically endorsed every Republican nominee for the past five election cycles, will stay out of the campaign process this time. He does not have plans to endorse presumptive GOP nominee Donald Trump, spokesman Jim McGrath told The Texas Tribune.
“At age 91, President Bush is retired from politics,” McGrath wrote in an email Wednesday. “He came out of retirement to do a few things for Jeb, but those were the exceptions that proved the rule.” His son Jeb Bush dropped out of the GOP presidential race in February.
Bush 43, meanwhile, “does not plan to participate in or comment on the presidential campaign,” according to his personal aide, Freddy Ford.

This is a fine and honorable course of action; it’s also pretty much exactly what Donald Trump would want, having campaigned as a repudiation of the “Republican Establishment” and lot of Bush policies — the Iraq War most prominently, but also George W. Bush’s effort at Social Security reform. He also memorably ripped into Jeb Bush, calling the former governor of Florida “a total embarrassment to himself and his family.”

No, if the Bushes really wanted to hurt Trump, they would use reverse psychology, turn the anti-Bush feelings into an asset, and endorse the Manhattan mogul, and say something like…

“Speaking as longtime Republicans who worked in Washington for a long time, and who had a key role in setting policies going back decades, we can’t think of any figure who is a better choice to stay the course than Donald Trump. We’ve known Trump for many decades, and he’s the kind of generous donor we relied on for many years. His prudent approach lines up with our thinking on issue after issue. We appreciate his defense of the Bush administration’s TARP and the auto bailout, and his plan to use military force to ‘take the oil fields’ and ‘bomb the’ — well, you know what — out of our enemies. His plan to allow illegal immigrants to apply for citizenship after they have returned to their own countries is a truly compassionate choice, one that voids a harsh penalty for this act of love. If you’re itching for the next best thing to another Bush presidency, we can’t think of anything closer to that than President Donald Trump.”