Apparently, the 48 federal states of America are offering a lot of jobs for people. If you are staying in one state and are qualified for some particular civil service positions, there is always a big chance for being hired.
Government puts up federal employment opportunities for more or less three million workers. Hundreds of thousands every year are transferring from one state to another. A huge percentage of the employment population is also trimmed down each year for the retired and resigned employees. Hence, the availability of federal employment opportunities becomes relevant.