Early in the campaign, Jeb Bush flubbed a question about whether his brother did the right thing by going into Iraq. It took him three tries to come up with a satisfactory answer about keeping us safe. Since then, Trump has been needling Bush about the Bush "legacy" and whether brother Bush kept us safe. Trump knows it gets Jeb Bush all flustered, distracted, defensive, and off-message when he brings it up.
The question now is who is getting hurt more by this line of attack, Bush or Trump? I think Trump, because Bush doesn't really have anything to lose. It may have stopped any Bush momentum early on in the race, but it's Trump's to lose now.
-PJ
Trump is trying to position himself for the GENERAL ELECTION.
W is blamed to this day for the economy and multiple wars we had no business being in.
Now Hillary/Sanders can’t attack Trump about George W. Bush’s record on (1) Iraq or (2) the bailouts.
Jeb took five days IIRC to answer the question—first, he had to run it through focus groups and polls to determine what his position was.
Trump just can't seem to help himself, lack of training or upbringing somehow, I don't know. He is an embarrassment.