“We’ve just seen something extraordinary on the Senate floor. The American people elected a Republican majority believing that a Republican majority would be somehow different from a Democratic majority in the United States Senate. Unfortunately, the way the current Senate operates, there is one party, the Washington party.” -- Senator Ted Cruz ("Independent," TX)
The answer is that the senate has a tradition of enforced niceties, so frank language is usually very risky. Frankly, niceties are a luxury at this point, and it seems that Cruz is one of the few (like Mike Lee) who understand this.
However, at this point the two parties' combined action and inaction in destroying the rule of law -- the rule of law being essentially what has made this a great republic -- appears irreversible. So for a sitting senator breaking the collective silence about bipartisan complicity not only seems too late, it looks too much like it is being done for personal advancement, if not by Lee, at least by Cruz in his run for president.
Anyway, now seems like a good time for me to re-post the cartoon I commissioned in 2002 when things were still not that far out of hand.
It's such a pity that you may not live to see how bad it can become and that your posterity will pay for the consequences of your lack of vision.