President Discusses Border Security and Immigration Reform in Arizona Davis-Monthan Air Force Base Tucson, Arizona 2:40 P.M. MST THE PRESIDENT: [SNIP the introductory part of the speech. Click the link above to read the introductions if desired.] I have a solemn duty, and so do the members of the United States Congress, to protect our nation, our Constitution, and our laws. Our border and immigration security officers devote themselves to those same missions every single day. America has always been a compassionate nation that values the newcomer and takes great pride in our immigrant heritage; yet we're also a nation...