How Does Trump’s Iran Deal Compare to Obama’s From 2015?

President Donald Trump signed a “memorandum of understanding” with Iran to end the four-month-long war, but critics, including politicians and media figures who often support the president, say it makes too many concessions to a radical Iranian regime. So how does this square with the Obama administration’s 2015 deal with Iran, which Trump attacked during the campaign and then repealed as president? NBC’s Keir Simmons reports on this week’s Sunday Focus.