As Americans are being urged to keep their distance from one another, travelers returning on flights from Europe say they are being made to wait for hours in close quarters at U.S. airports to get screened for coronavirus.Several travelers told CNN that when they arrived at airports in Dallas, Chicago and New York, they faced long lines and confusion.President Donald Trump announced restrictions on entry into the U.S. from 26 countries in Europe on Wednesday. The ban went into effect at midnight Friday, but only after the original announcement sparked chaos at European airports as Americans sought ways to return home before it went into place.Karen Rogers, a passenger returning from Paris by way of London told CNN Saturday night she had been waiting in line for at least five hours to be screened at Chicago’s O’Hare International Airport and was told she would have at least another hour to