At what point does he have to commit to an issue? He is a Democrat. He can say one thing today, another thing tomorrow. And it isn't a big deal. He can get elected, pick a third option, and be reported as a brilliant politician. What he does and what he stands for matters nothing to his voters...or his fan base of tv reporters.
Yes, he will have to answer the tough questions.
Maybe not a few years ago. But definitely, these days.
We live in great times.