Leahy said waiting until the Senate returns from a state-work week would give senators plenty of time to read the more than 800-page bill. Some Republicans senators, such as Jeff Sessions (Ala.), have expressed concern that the bill is moving too quickly.
The bipartisan group of eight senators, called the Gang of Eight, introduced S. 744, which would create a pathway to citizenship for illegal immigrants already in the country, toughen border security, create a guest worker program and boost high-skilled immigration.
Sens. Marco Rubio (R-Fla.), John McCain (R-Ariz.), Lindsey Graham (R-S.C.), Jeff Flake (R- Ariz.), Charles Schumer (D-N.Y.), Dick Durbin (D-Ill.), Bob Menendez (D-N.J.) and Michael Bennet (D-Co.) comprise the Gang of Eight.