The so-called "Gang of Eight" bipartisan group of senators on Thursday debuted its new immigration overhaul bill as a tough but fair and necessary step toward bringing illegal immigrants out of the shadows.

At a press conference, the four Democrats in the gang emphasized that the bill includes tough enforcement measures and an onerous pathway to citizenship, while the four Republicans stressed immigrants' importance to the United States and the pressing need for immigration legislation.

"Yes, our bill does secure the border first," Sen. Charles Schumer (D-N.Y.) began his remarks.