The bipartisan plan to overhaul the nation’s immigration law, which a group of eight senators is expected to unveil this week, creates a pathway to citizenship for the more than 11 million immigrants living in the U.S. illegally, increases border security and overhauls a bevy of visa programs, many tied to employment opportunities.

Here is a summary of the legislation:

— Homeland Security secretary must submit within 180 days a $4.5 billion plan for surveillance systems, fences, drones and other means to gain “effective control” of high-risk Southern border areas—meaning at least 90% of people attempting to enter illegally are apprehended or turned back.