An Ashcroft aide acknowledged the terrorist alert issued Friday was one of several factors in the decision to cancel the trip.
"As adults, and moreover as students of international politics, we then made the decision to proceed with the trip, " the letter said.
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According to the Vatican's semi-official newspaper, L'Osservatore Romano, the Pope took the decision to resign after his trip to Mexico and Cuba in 2012.
Would he have made the same decision if it were a business trip?
Batsman Darren Lehmann said he had harboured similar doubts but had made the decision to go ahead with the trip.
Feeling good as a result of making a frugal shopping decision is important, whether the shopping trip resulted in actual savings is not as important.
Mr Obama has now put off his decision until after he returns from his trip to Asian countries beginning this week, and may not make a choice until December.
On Tuesday afternoon, Chester Zoo announced that a decision had been taken to postpone the trip following news at the weekend that a Nigerian Islamist militant group had killed seven foreign hostages.
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But there is also the decision over which leg to take on the trip.
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"I feel uneasy about that decision, but I also know the baseball trip can be a great learning experience, " she said.
We don't know the cost of the abortive trip yet but Labour MP Chris Bryant has said the decision to recall Mr Jones was a waste of money.
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The trip, by American envoy, Christopher Hill, follows a decision by the UN Security Council to delay voting on a resolution calling for sanctions against Pyongyang.
McCulloch was booked for disputing the decision, ruling the Rangers player out of the midweek trip to Georgia.
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The England and Wales Cricket Board's decision not to name a replacement for Moores on this trip has led to suggestions the team has no direction, but Flower argued the build-up for the tour had gone well.
He took the decision not to fly to Dubai for the 12-day trip shortly before his team-mates departed.
This same source said Weiner responded that he doesn't want to make a decision until his wife, Huma Abedin, returns from a trip.
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The Vatican confirmed on Thursday that Pope Benedict had hit his head during the March trip to Mexico, but denied the accident had any role in his decision.
Torres was looking far more lively than in recent games, perhaps justifying Hodgson's decision to rest him and several other players for the midweek Europa League trip to Naples.
Federico Lombardi, did not deny Thursday that Benedict had had an accident on his March 2012 trip to Mexico, but said the injury had no effect on his health or his decision to resign.
The only point my trip is meant to make is that no-one else has the right to foreclose that decision.
Even Trip Doggett, president of the Electric Reliability Council of Texas, has come out publicly saying that the decision by the EPA to curtail emissions from coal-fired power would jeopardize the supplies of electricity in Texas.
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