DENVER — Southwest Airlines asked a woman to prove her relation to her biracial son while they were at the Denver airport on May 28, the BBC reports.<br /><br />Lindsay Gottlieb, who is white, was traveling with her African American fiance Patrick Martin and their son, when they showed the official their child's passport at the airport.<br /><br />However, the official asked for further evidence to prove they were a biological family, asking to see a Facebook post or a birth certificate.<br /><br />Gottlieb said "being pushed further to 'prove' that the child was her son felt disrespectful," the Washington Post reports.<br /><br />Gottlieb claimed in a tweet that she has flown with her son "approximately 50 times," and this type of an incident has never occurred.<br /><br />The airline was quick to apologize in a statement and said they were going to launch an investigation into the incident, CBS News reports.<br /><br />Gottlieb claims the officials told her that the airlines would treat the incident as a "coaching" moment for their employees, referring to Gottlieb who coaches the Women's basketball team at the University of California at Berkeley, CBS News reports.
