Congressional Dems, OTOH, have shown themselves utterly untrustworthy - Star Chamber tactics have consequences - and one leak might have resulted in the target being replaced with an ambush.
Schiff, Nadler, etc. hate Donald Trump more than they love this country. If they had known what was happening, they would have alerted the press, for sure, and screwed up the mission. If it cost American service member lives, well, so much the better, since it would have made Trump look bad. I'm not 100% sure that Pelosi is as afflicted with TDS, but it's still better to play it close to the vest when dealing with Dems and national security.