The Republican Party made clear on Tuesday that House Minority Leader Nancy Pelosi’s comments on the violent MS-13 gang will haunt Democrats until the midterm elections. President Trump recently prompted an angry backlash by members of the media and his political opponents by referring to MS-13 members as “animals,” but the Republican Party is betting that American voters are on his side. Its new campaign ad titled “Democrats’ Midterm Message? MS-13 killers aren’t so bad” tallied over 52,000 views in less than six hours. “When the president of the United States says these aren’t people, these are animals, you have...