U.S. authorities didn't return phone messages from The Associated Press seeking comment Monday, which was the Memorial Day holiday in the United States.

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Next week is a slow one for IPOs with the U.S. Memorial Day holiday, but there is plenty to digest in the IPO week that was.

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The bill is expected to be unveiled within days and it could proceed to a vote before the Memorial Day holiday weekend at the end of May.

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And, finally, the summer begins on Memorial Day, a US public holiday which falls on the last Monday in May (after which it is socially acceptable to wear white), and ends on Labor Day, the first Monday in September.

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The idea is that if Memorial Day was not simply a long weekend holiday for going to the beach and grilling, more Americans might actually realize that it has a deeper and much more somber meaning.

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Markets are closed on Monday in the U.S. for Memorial Day and in the U.K. for a bank holiday.

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