The committees are expected to give him immunity from prosecution based on his Congressional testimony, and he is likely to testify next month.

The Congressional committees have given some potential witnesses limited immunity, or immunity from prosecution based on their testimony.

Such theories aside, the events of today point up the difficulty of bringing a prosecution based partly or largely on classified information.

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

If the committees voted to give them immunity from prosecution based on their sworn statements, they would be required to testify.

Colonel North has been granted limited immunity from prosecution based on his testimony.

In such situations, he said, his office presses on with prosecutions based on evidence supporting the charges.

The prosecution based its case on 40 witnesses and 558 exhibits presented over seven months.

She indicated that arguments against prosecution based on due process violations and alleged violations of religious freedom had no merit.

Then, the committees granted him immunity from prosecution based on his Congressional testimony.