That's what Time Magazine is reporting we learned Think Progress:

“A source close to the investigation told TIME that scores of US prosecutors and FBI agents continue to examine the activities of other sitting members of Congress and prominent individuals who could face prosecution, though not necessarily before the November 7 election. The source confirmed previous public reports that particular scrutiny is being paid to Sen. Conrad Burns, a Montana Republican who faces a tough campaign for reelection.”

CREW named Senator Burns (R-MT) one of the 13 most corrupt members of Congress in Beyond Delay:

Sen. Burns's ethics issues are based on campaign contributions he accepted in apparent exchange for exercising his authority as Chairman and on a trip some of his staff members took to the 2001 Super Bowl.