Sarah Ivory: Welcoming newcomers is what makes America exceptional

Despite all of its pitfalls, I believe in American exceptionalism.We are a nation founded not along boundaries and ethnic lines, but on ideals. It is this, more than anything, that makes us exceptional. Throughout history our diversity — of people, of ideas, of cultures, of geography — has been our greatest strength. Our nation has been moved forward at every turn by people who have left what they know in order to create a better future in this country.The story of migration for the