Federal prosecutors say the armed suspect arrested in former President Obama's D.C. neighborhood went there after Trump posted about its location on social media. Plus, newly revealed information about what the DOJ told a federal court before the FBI searched Mar-a-Lago, including surveillance footage of classified documents being moved. And, after a surge of deadly shootings over the 4th of July holiday, Alisyn Camerota speaks with gun owners about their solutions to mass shootings.
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