Probationary legal status: A temporary status that would be given to undocumented immigrants who meet a series of requirements under the new Senate plan.
Restrictionists: People who support lower levels of immigration, both legal and illegal.
STEM visas: These are visas that are awarded to students who graduate from U.S. universities with advanced degrees in the fields of Science, Technology, Engineering and Math. Both parties support adding more.
Visa overstay/entry-exit tracking: Of all undocumented immigrants, 45 percent entered the country legally and overstayed visas. A program called U.S. Visit tracks people entering the country, but the Senate blueprint calls for a tracking system that would prevent people overstating their visas.
Visa backlog: The wait for a visa can take anywhere from months to decades, depending on who you are and where you're coming from. The Senate plan proposes clearing the backlog of applicants waiting for a visa.