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.

A long-shot effort by Democratic Rep. Shri Thanedar to force an impeachment vote against President Donald Trump was abruptly pulled Wednesday evening after a group of Democrats signaled they would vote with Republicans to block the move.

Rep. Al Green (D-Texas) said Friday he will force a vote on impeaching President Trump — just days after another Trump impeachment effort was scuttled. Why it matters: Green, unlike Rep. Shri Thanedar (D-Mich.