South Carolina Gov. Mark Sanford had plane reservations to stay in Argentina with his mistress for ten days, according to an airline industry source who reviewed Sanford's travel plans.

This source told me that Sanford's reservations had him leaving the US on June 18 on Delta Air Lines, with a scheduled return on June 28, arriving back in Columbia, South Carolina on June 29 - that is next Monday.

Such a lengthy travel schedule would have kept Sanford away from his gubernatorial duties for eleven days in all - and possibly triggered a constitutional crisis in South Carolina since no one on his staff evidently knew that he was not only out of the state, but out of the country as well.

Some in South Carolina have already questioned whether the Governor broke the law by leaving the state without transferring power to the Lieutenant Governor.

Sanford returned to the U.S. two days ago, but flew only to Atlanta, instead of continuing on to the airport in Columbia, South Carolina, where he began his trip.

Who paid for his flight?  Records indicate that Sanford used 75,000 personal frequent flier miles through the Delta Sky Miles program to pay for the ticket. 

He made the reservation on June 13, five days before his departure, so this was not a last minute decision to leave the country.

While in Argentina, the Governor called Delta at least twice to inquire about moving up his return reservation from the 29th.

On June 20th, he called to ask about changing his reservation to June 24.  On the 23rd he called to change his return flight to that same day, an evening flight that landed in Atlanta the next morning, with no connection on to Columbia.

Those changes cost Sanford almost $300 in fees and taxes.

These new details have emerged as more calls are being heard for the Governor to resign, something Sanford indicates he is not considering.

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