DNA Testing

The Kansas Legislature is considering a bill to do DNA testing from blood and oral samples of persons arrested for felonies. Now, the samples are taken only from persons convicted of a felony. If an arrestee does not become a convictee, the sample will be destroyed. Besides the expense of developing a DNA profile for comparison with crime scene DNA evidence, why is there any reluctance to sampling people and building a DNA database that is as extensive as the fingerprint data base? Is this a constitutional issue of privacy or self-incrimination or whatever? DNA profiles are state of the art due to the science behind them. DNA sampling should be performed on everyone who wants a driver's license, passport, social security card or any other process that positively identifies the person sampled.