MILWAUKEE - Barack Obama said Friday that the country must do "whatever it takes" to eradicate gun violence following a campus shooting in his home state, but he believes in an individual's right to bear arms. Obama said he spoke to Northern Illinois University's president Friday morning by phone and offered whatever help his Senate office could provide in the investigation and improving campus security. The Democratic presidential candidate spoke about the Illinois shooting to reporters while campaigning in neighboring Wisconsin. The senator, a former constitutional law instructor, said some scholars argue the Second Amendment to the Constitution guarantees gun...