Donald Trump's five-day feud with former beauty queen Alicia Machado is only the latest example of his insistence on airing his grievances no matter the political cost.

By Jonathan Lemire, Associated Press

On Friday, Donald Trump’s campaigning began long before he reached President Gerald Ford's Michigan tomb, where he was slated to speak. He unleashed a slew of early morning tweets maligning Alicia Machado, a former Miss Universe he had previously mocked…

By PBS NewsHour

Since Monday night's debate, Donald Trump's taxes and tweets have drawn rapt attention. Syndicated columnist Mark Shields and New York Times columnist David Brooks join Hari Sreenivasan to discuss the "bizarreness" of the week's campaign developments, Hillary Clinton’s struggle to…

By PBS NewsHour

A day after he injected former President Bill Clinton's dalliances into the campaign, Trump accused Hillary Clinton's campaign of helping 1996 Miss Universe winner Alicia Machado get U.S. citizenship, but offered no proof.

By Josh Lederman, Catherine Lucey, Associated Press