In a statement, Oversight Committee Chairman James Comer urged the full House to hold the Clintons in contempt, saying his committee had sent a "clear message" that "no one is above the law, and justice must be applied equally—regardless of position, pedigree, or prestige".
Until they subpoena Trump the same way, since there's ample evidence he's more involved than they are, any sort of comments like this are just political.
And despite the Clintons being correct that it is an attempt to embarrass them (ignoring everything they've don't to embarrass themselves more), ignoring Congress is also an embarrassment regardless of the situation. They should get the book thrown at them just like anyone else ignoring subpoenas. If only so they finally go the fuck away.