What is most troubling about Mr. Putin's aggression in Crimea is that it reflects a growing disregard for America's credibility in the world. That has emboldened other aggressive actors - from Chinese nationalists to Al Qaeda terrorists and Iranian theocrats.

In 1987, I had my first opportunity to provide 'advice and consent' on a Supreme Court nominee. At that time, I stated that the qualifications essential for evaluating a nominee for the bench included 'integrity, character, legal competence and ability, experience, and philosophy and judicial temperament.' On that test, Elena Kagan fails.

My record shows that I have put my country first, and I follow the philosophy and traditions of Abraham Lincoln and Theodore Roosevelt and Ronald Reagan.

I think it's important for the president of the United States to be aware of the intelligence information that we have.

I mean, everyone agrees with stress tests for banks. I mean that's clear. But banks should do that on their own. And they should worry about their own capital functioning. That's what they should do. It shouldn't be a government function.

Trump's rise to power, fueled by hatred and portending crisis, threatens to eviscerate our constitutional system of government.

It's counterintuitive, but the most divisive arrangement is when the same party controls both Congress and the presidency, a situation encountered in eight of the past 10 years. With government unified under a single party, the minority has the least possible incentive to cooperate with the majority.

If the government decides to put your life under a microscope, do you think it won't find something? I suspect there's not an adult in the country who would walk away totally unscathed if every aspect of his or her life were investigated the way Stewart's ImClone trading was.