Congress is a subversive organization. To expect Congress to uphold the constitution is just plain nuts. Cruz won't be elected, so we won't see Congress with an opportunity to rule on Cruz's eligibility, but it (Congress) didn't question dual-citizen Obama's eligibility (not one single word), and telegraphed with S.Res.511 that it finds foreign-born persons to be pure American, without resort to law.
Courts are too chicken to throw a monkey wrench into the NWO train, I think. But somewhere along the line, some judge is going to want a place in history, and is going to pop Cruz's bubble.
We'll see how it plays. There is a point in time where this sort of suit make sense, and that is when an ineligible candidate is doing well in the polls and at the ballot box, before being nominated. Not much damage done by stepping into the process now, compared with after an election. Surely somebody has an interest in ballot integrity, besides the stupid voters.