We need to be very careful in making judgment on opening borders and adopting immigration policies, as these are areas where political and emotional elements feature prominently.

For years, we have underestimated the challenges of mass immigration.

I think Bush's immigration proposal is treason and he should be impeached.

DACA is a lifeline for individuals who have grown up in the U.S. but who lack immigration papers.

On immigration, Europe is in danger of displaying the worst of itself: selfishness, haphazard decision-making and rows between member states.

I would argue that you're only going to get the conservatives, particularly a Republican House, to pass immigration reform if we, as conservatives, are reassured that the border is controlled and that we get to vote on whether the border is controlled.

Immigration reform is a must, an amnesty. So that's my position. I've been pushing that one since before it was popular.

Immigration in America is a highly polarized issue and there are passionate views on both sides.

Economic conservatives like immigration reform, and in fact, many of them supported the bill that John McCain and I put together in the Senate.

Immigration is one of the leading contributors to population growth.

A big goal of the liberal Democrats in Congress is to try to do away with any effective cooperation to enforce federal immigration laws.

Republicans can't always agree on where to cut spending. They certainly can't agree on what to do about entitlements. There isn't a unified foreign policy vision, and there's no consensus on immigration reform.

Well-meaning Europeans sometimes argue that unlike the U.S., their countries are traditionally 'homogeneous' and have little experience with immigration.

I was a co-sponsor of Comprehensive Immigration Reform.

We need legal immigration as an alternative to illegal immigration and a way of getting the millions of unauthorized immigrants already here to get legal and get in compliance with our laws.

The Republican Party needs to be very, very careful that it maintains the Golden Rule in its rhetoric regarding immigration policy.

It's not like Mexicans have an illegal immigration organ in their body and at 14 kicks off a hormone and shows them how to come to the United States illegally. It's a question of desperation for a vast majority of them.

Immigration isn't always good for the economy or jobs.

I've never met a Democrat in Congress who wants open borders or who doesn't believe in enforcing immigration laws.

I don't see how the party that says it's the party of the family is going to adopt an immigration policy which destroys families that have been here a quarter century.