WASHINGTON (Reuters) - For President Donald Trump, the death of Islamic State leader Abu Bakr al-Baghdadi is a signature achievement that may help quell growing criticism from his own ranks, but it is unlikely to offer much relief from Democratic-led scrutiny of his dealings with Ukraine.

The raid could not have come at a better time for Trump, who is facing an impeachment investigation by Democrats in the U.S. House of Representatives who say his attempt to persuade Ukraine to investigate Democratic rival Joe Biden was an abuse of power and may have put national security at risk.