Why are they trying to do that?

It is the law. A license suspension is initiated automatically when someone is arrested for DWI and they blow over .08 on the breathalyzer. It is also initiated if someone refuses to blow in the breathalyzer or refuses to give blood if the police request it. The suspension for refusing to blow or give blood is based on the legal theory that by getting a driver’s license, you have agreed to give breath or blood when requested by law enforcement (implied consent). However, the suspension can be delayed and challenged at an ALR hearing.