In before the anti-Cruz birthers...
If they were really interested in just simply the questions about the constitution, then they'd be using Rubio and Jindal as examples.
Both make excellent examples for discussion, and using them as discussion starters instead of Cruz, doesn't harm Cruz's attacks on ObamaCare, Illegal Amnesty, and government overreach in general.
We're fairly certain, as well, that Rubio will test the presidential waters. So why not attack him instead. After all, it makes more sense to ruin the Gang of 8 bill by attacking Rubio's citizenship than it does to ruin Cruz's desire to stop ObamaCare and Illegal amnesty.
Then they could spout off to their heart's content and nobody would care. But, no...they want Cruz to be the target.
If the Communists can have Obama, we can have Cruz, regardless if he was a space alien.