The state's 20 members of Congress took 70 foreign trips and visited 44 countries over the past two years at a cost of more than $518,000, a Tribune analysis found.
The actual cost, which under the rules of Congress can be paid for by a number of entities, is hard to pinpoint. When military aircraft are used on congressional trips, that expense is mentioned — but a dollar figure is not attached. When foreign governments pay for trips, the cost remains a mystery. And some reports from recent trips have not been filed.
Adam Kinzinger, a Republican from Channahon, was the most frequent flier. He has taken nine foreign trips since October 2013, the analysis found.