Senate Republicans are set to announce today the hardest-hitting package of immigration enforcement measures seen yet -- one that would require jail time for illegal immigrants caught crossing the border, make it harder for them to open bank accounts and compel them to communicate in English when dealing with federal agencies.

Most of the bills stand little chance of being debated in the Democratic-controlled Congress. But the move by some of the Senate's leading Republicans underscores how potent the immigration issue remains, particularly in a presidential election year.

The bills give Republicans a way to put pressure on the Democratic and Republican presidential candidates to take a tougher stance on immigration. They also reflect a shift toward harsher immigration rhetoric and legislative proposals from both parties since Congress failed to pass a comprehensive overhaul in 2007.

The package -- an enforcement smorgasbord assembled by at least eight lawmakers -- consists of 11 bills, but it could expand to as many as 14. Some elements echo House bills, but others go beyond House proposals.

One would discourage states from issuing driver's licenses to illegal immigrants by docking 10% of highway funding from states that continue to do so.

Another would extend the presence of the National Guard on the border, and a third would end language assistance at federal agencies and the voting booth for people with limited English ability.