This morning, the Senate is convening its second hearing on the Gang of Eight's immigration bill.
After months of negotiations, there are a few new stumbling blocks in its way. Revelations about the immigration status of the two suspects in last week's bombing in Boston might force lawmakers to rethink parts of the bill. In addition, pet projects hidden in the bill are beginning to raise questions about the initial agreements between labor and business.
For more on this, we're joined by Wall Street Journal editor Aaron Zitner.