In the middle of his wandering speech before the Boy Scouts of America on Monday night, President Trump asked with a smirk if Barack Obama had ever visited them at a jamboree.
“The answer is no,” he assured the crowd. President Obama, who was a boy scout in his youth, unlike Mr. Trump, missed the two national jamborees that took place when he was president (though he did address them by video). But he invited a group of scouts to come to the Oval Office each year, and he gave them a very different kind of message from the one they

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