The House panel is scheduled to hold a hearing today on the investigation.
Republicans on the House panel take issue with such finger-pointing.
And more than a week after the House panel completed its action, the committee staff is still struggling to figure out who added what.
A House panel is expected to finish a comprehensive trade bill this week.
"Exxon takes full responsibility and has done so from the beginning," he told the House panel.
The cable industry generally approved of the House panel's action.
The House panel is expected to take similar action today.
The House panel today added $500 million to the program's budget.
At least three other cases before the House panel involve personal conduct.
The time off was estimated by the House panel to have cost taxpayers more than $61 million in lost work.