Some of the most strident opponents of the nuclear accord with Iran are invoking memories of the Holocaust in an effort to defeat the agreement, arguing the deal could enhance Iran’s ability to build a bomb, leading to the destruction of Israel. Those arguments, however, failed to sway two senators who grew up hearing stories of the Holocaust firsthand, despite fierce opposition to the deal from Israeli leaders and some Jewish groups. “My parents told me at a young age what it was like to live in fear,” said Sen. Ron Wyden, D-Ore. “For German Jews, the fear was always...