From http://washingtonindependent.com/31444/leahy-announces-hearing-next-week-on-truth-commission

Picking up on the controversial proposal he made during a Feb. 9 speech at Georgetown University, Sen.Patrick Leahy (D-Vt.) today reiterated his call for a “truth commission” on the Senate floor and said the Senate Judiciary Committee would hold a hearing next Wednesday to begin to consider the idea.
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“I’ve seen what’s happened before with prosecutions,” added Leahy, clearly anticipating some objections from the left. “We don’t find the whole truth, but prosecute those on the way bottom of the chain of command.”

(emphasis mine)

Patrick Leahy – 9.11 Truth’s Best Chance for Justice?

Is there any hope that Congress will reopen 9.11 for investigation? Many of us have been wondering this since the historic election results of early November handing Democrats a majority in both houses of Congress.

Many of us are rightfully jaded. The democrats in many respects have been complicit in the cover-up of many of the most important facts and questions associated with that day.

But, we should not entirely give up hope. The political tides are changing, and there is perhaps one glimmer of hope that we should all consider actionable.

In October of 2001 Senator Patrick Leahy was one of two democrats targeted in the Anthrax attacks (which was later verified to have originated in US military bio-weapons labs). These attacks helped to usher in the Patriot Act which Leahy had opposed.

According to Paul Thompson’s timeline:

"On October 4, Senate Judiciary Committee Chairman and future anthrax target Patrick Leahy (D) accuses the Bush administration of reneging on an agreement on the anti-terrorist bill. Leahy is in a key position to block or slow the bill."

And then in late September 2006 Senator Patrick Leahy posed the following questions: