Ivanka Trump is usually seen as the cool, calm and collected Trump, a quality that has been put to good use in her father's presidential campaign. But at the Republican convention on Wednesday night the daughter of Donald Trump appeared uncharacteristically angry as Texas Sen. Ted Cruz took the stage and refused to endorse her father. Ivanka was photographed frowning and pointing her finger as Cruz, her father's fiercest rival in the primary, told Republican voters at the convention to "vote your conscience, vote for candidates up and down the ticket who you trust to defend our freedom and to...