Or would you feel pinched? If your roof sprung a leak or your dentist said you needed a crown, would you be able to write a check to cover such an emergency? Either might cost $2,000, but about half of Americans say they couldn’t come up with that much cash within 30 days. That’s according to a paper published by the National Bureau of Economic Research, using data from the 2009 TNS Global Economic Crisis survey aimed at showing the extent of financial weakness in the U.S. and other nations. The survey asked, “If you were to face a $2,000...