The dangers of dynamic currency conversion

burning dollarProcessing a credit card charge for overseas purchases used to be pretty simple. You swiped your card while on vacation, your bank changed the money from pesos or euros into greenbacks, and the amount you’d spent appeared on your bill. Maybe you paid a small conversion fee, but you also got a competitive exchange rate.

Not anymore. Just ask Jae Cuadra, who recently tried to buy a round-trip train ticket between the Swiss cities of Interlaken and Lauterbrunnen. The purchase, at a train station in Interlaken, went on his Capital One Visa card, which doesn’t charge to convert foreign currencies. But “for the first time, I was offered a choice,” says Cuadra, a registered nurse from Westbury, N.Y. “Did I want to pay in dollars or Swiss francs?”
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Why can’t I transit through London?

Question: I’m an Indian national residing in the United States. I was scheduled to fly from Houston to Mumbai on British Airways recently. My itinerary involved a short stopover in London.

In Houston, while checking in with British Airways, I was denied boarding because my work visa was not stamped in my passport. The original visa stamped in my passport had expired and I was traveling to India in order to get my renewed visa stamped at the U.S. consulate in Mumbai.
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