We have an epidemic of fatherlessness here, and that's what I agree with the president [Barack Obama] on, and we should be doing more to promote and protect marriage as between a man and a women for the needs of our children.

Few challenges facing America and the world are more urgent than combating climate change. The science is beyond dispute and the facts are clear.

We Americans are not an inherently more violent people than folks in other countries. We're not inherently more prone to mental health problems. The main difference that sets our nation apart is what makes us so susceptible to so many mass shootings is that we don't do enough, we don't take the basic commonsense actions to keep guns out of the hands of criminals and dangerous people. What's different in America is it's easy to get your hands on a gun.

All across the world, ...increasingly dangerous weather patterns and devastating storms are abruptly putting an end to the long-running debate over whether or not climate change is real. Not only is it real, it's here, and its effects are giving rise to a frighteningly new global phenomenon: the man-made natural disaster.

We stand with Israel as a Jewish democratic state because we know that Israel is born of firmly held values that we, as Americans, share: a culture committed to justice, a land that welcomes the weary, a people devoted to tikkun olam. ... So America's commitment ... and my commitment to Israel and Israel's security is unshakeable. It is unshakeable. ... I am proud to say that no U.S. administration has done more in support of Israel's security than ours. None. Don't let anybody else tell you otherwise. It is a fact.

Heaven forbid we've got a problem where we could have prevented a terrorist attack or apprehended someone who is engaged in dangerous activity, but we didn't do so simply because of inaction in the Senate.

Our intelligence communities spend a lot of time and effort gathering a lot of strands and a lot of data [on Russian hacking]. There are times where they're very cautious and they say, "We think this is what happened, but we're not certain."