IMHO whether Ivanka followed specific protocol (and obviously it can vary) while the anthem was being played, is of little to no importance. She is not an America hater or globalist, that is clear.
And clearly people were taught different protocols growing up.
London under Mayor Sadiq Khan:
• Residential burglary up 37%
• Robbery up 60%
• Homicides up 24%
• Knife crime up 49%
Instead of spending time attacking President Trump, why doesn’t Mayor Khan do his job and protect Londoners?— Tanner (@tannerstake) June 3, 2019