Sure…

Sen. Patrick Leahy (D-VT)...

“Senator Clinton has every right, but not a very good reason, to remain a candidate for as long as she wants to."

…but aren't there times when exercising a right is, well, wrong? I mean, Nader has a right to run, doesn't he? Do you really think he should? Isn't 'why' at least as important as 'whether'?