The Government's effort to build a case appears to be moving forward, with negotiations for the first grant of immunity under way.

The major testified under a grant of immunity from Army prosecutors.

Under that immunity grant, testimony from the colonel could not be used against him.

Young got out of it on a federal grant of immunity.

The grant of immunity protects him from prosecution based on information he provided to Congress.

The players testified before the grand jury under grants of immunity.

The three testified under grants of limited immunity from prosecution.

He was called as a prosecution witness and testified under a grant of immunity.

Because his admission was made under a grant of immunity from prosecution, the statement cannot be used against him in the trial.

The Senate's grant of immunity from lawsuits to gun manufacturers is only the latest example.