By Kayla BranchStaff writerkbranch@oklahoman.comBecause of record low unemployment rates, the U.S. Census Bureau is struggling to find enough workers to fill the ranks for the upcoming 2020 count.It is especially challenging in Oklahoma, where the 3.2% unemployment rate is lower than the national average of 3.7%, according to the Bureau of Labor Statistics.“Three percent unemployment essentially means there is no unemployment,” said Shane Ousey, the census area manager for Kansas, Oklahoma and Dallas.“So what we have been doing is appealing to people’s patriotism and sense of duty.Read more on NewsOK.com