MEXICO CITY (AP) - Vice President Kamala Harris brushed off questions about her decision not to go to the U.S.-Mexico border as part of her work to address the spike in migration, declaring Tuesday that while it was "legitimate" to be concerned about the situation at the border, it wouldn’t be addressed with a simple visit.As she closed out a two-day visit to Guatemala and Mexico aimed at strengthening diplomatic ties to help deal with migration to the U.S., Harris declared: "When I’m in Guatemala dealing with root causes, I think we should have a conversation about what’s going on in Guatemala."Speaking to reporters traveling with her in Mexico, Harris was asked about the prospect that her decision not to visit the border may be.