Karl Pierson, 18, was old enough to buy a shotgun under Colorado law – and he bought it a week before he stormed into Arapahoe High on Friday in search of the school debate coach. He bought ammunition that morning, officials say.
More than 82,000 young illegal immigrants have applied for a work permit under the Deferred Action for Childhood Arrivals (DACA). But the November elections could be key to what happens next.
On the eve of the first US presidential debate, Mexicans weigh in on where President Obama and Republican candidate Mitt Romney stand on immigration – and offer policy proposals of their own.