MILWAUKEE (AP) — U.S. Rep. Paul Ryan blamed the Obama administration Tuesday for contributing to the circumstances that led to the swift ascent of the Islamic State, a militant group that purportedly beheaded a second American journalist in two weeks. Ryan, who chairs the House Budget Committee and was the Republicans' 2012 vice presidential candidate, is better known for focusing on budget issues and domestic policy than on foreign affairs. In its rise to prominence over the past year, the extremist group has frequently published graphic photos and gruesome videos of everything from bombings and beheadings to mass killings.