The State Department has agreed to release documents related to President Trump's handling of aid to Ukraine, potentially providing ammunition to the impeachment probe now being conducted by Democrats in the House of Representatives.

The decision comes in response to a lawsuit filed by American Oversight, a watchdog group affiliated with progressive causes. That lawsuit was initially filed in the spring, after Trump dismissed U.S. Ambassador to Ukraine Marie L. Yovanovitch. Since that firing, a whistleblower complaint and other developments have led to allegations Trump used $400 million in aid to Ukraine as leverage on authorities there to investigate Hunter Biden.