lol Rep Elijah Cummings ordering them to preserve all emails carries exactly as much legal weight as the President of the Camden NJ Justin Bieber Fan Club ordering them to preserve all emails. But congrats for suddenly finding an interest in transparent, law-abiding government. It's never too late!
You didn't even read the link. The House Oversight Committee of which Cummins is a member made certain requests of Kushner which he chose not to honor. The Trump Admin has denied that the change violating that request even took place.
Of course the committee wants to hear from Kushner in person about that.
You've been hating on Cummins, anyway, nearly as long as you've been hating on Hillary, right?