The sudden cancellation of the impeachment vote and the warning issued to Donald Trump signal deep divisions within Congress and a strategic recalibration by Democrats. It underscores the political volatility surrounding Trump's actions and the difficulty of holding him accountable in a hyper-partisan climate.

As the House heads toward a vote on a resolution to impeach President Donald Trump, the Democratic congressman who introduced the resolution is being criticized by his colleagues. On Tuesday, embattled Democratic Rep.