In their ongoing watch over the legality of the president's actions, constitutional experts are revisiting this tricky question.
Robert Mueller's investigation is about more than ousting the president. It's about respecting democratic institutions and protecting constitutional norms.
It could be the president's only option if he ends up entangled by his own incriminating statements, and by evidence from others.
According to the "Democracy Now!" Web site, producers Sharif Abdel Kouddous and Nicole Salazar were arrested Monday afternoon "while they carried out their journalistic duties in covering street demonstrations at the Republican National Convention," and host Amy Goodman was arrested for "defending her colleagues and the freedom of the press."