CONCORD, N.H. (AP) — U.S. Sen. Jeanne Shaheen isn't ready to push to ban travel from Ebola-stricken West Africa, while her Republican challenger Scott Brown says a ban is absolutely necessary. The two were asked during a televised debate Tuesday about the Obama administration's decision to tighten the nation's defenses against Ebola by requiring that all arrivals from the disease-ravaged zone pass through one of five U.S.