The backdrop: The 30-second ad, a shorter version of a clip Trump tweeted last week, depicts undocumented Mexican immigrant Luis Bracamontes, who received the death penalty for murdering two police officers in 2014. Unlike Trump's tweet, the ad does not falsely blame Democrats for letting Bracamontes into the country, but it does attempt to connect Bracamontes and his crimes to the migrant caravan traveling through Mexico to the U.S. border.
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