Gun control activists say the Colorado shootings should be a wake-up call, but Americans' views on guns aren't swayed by individual tragedies, polls show. The candidates know that.
The US House approved a bill in July that’s likely to spark a showdown on military spending.
President Obama and Mitt Romney have changed their scheduled events today. The president addressed the Colorado shooting tragedy this morning, saying It's a chance to put divisive rhetoric aside and try to bring the nation together. Romney also addressed the theater shooting.