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Barbara Bush

Reintroducing ... Jeb!

Reintroducing ... Jeb!

An exclamation point is a handy thing. Its very presence demands attention and, if properly deployed, can convey excitement, surprise, wonderment, even outrage.

All these things had been lacking in the long and shaky run-up to the 2016 presidential campaign of Jeb Bush, which he formally announced Monday. As if to inject missing enthusiasm into it, his strategists dusted off the old logo of "Jeb!" from his earlier races for Florida governor, and he did his best to live up to it.

In an animated and aggressive speech before appropriately cheering supporters at Miami Dade College, the son and brother of two previous presidents put on an impressive show of...