The EuropeanCommissionsaid that countries inside the European Union's passport-free Schengen area should be allowed temporarily to reimposebordercheckswhenfacedwithlarge Numbers ofmigrants.
One option is to reimpose capital controls for a temporary period (which would punish speculators but might reduce confidence in the financial markets).
Less promisingly, he may reimpose capital-gains tax on the sale of shares held by one company in another, which was abolished at the start of this year.
"We can't envision a scenario in which the U.S. Congress will want to reimpose" the tax on married couples and the tax on estates, said a senior administration official.