Washington (CNN) — The full Senate formally kicks off debate Tuesday on the bipartisan “Gang of Eight” immigration reform bill — a plan which, if enacted, will create a 13-year path to citizenship for most of America’s 11 million undocumented immigrants. Among other things, the measure aims to strengthen border security while raising the cap on visas for high-skilled workers and establishing a new visa program for low-skilled workers on America’s farms and elsewhere. “This