A federal crime is significant because of the possibility of a prison sentence even on a first offense. Most federal crimes result in felony charges with minimum prison sentences of one year. No matter what you've done, no one wants to go to prison for any length of time. That's why it's important to develop a defense early on in your case.
Here is a case in which a man allegedly committed crimes for close to three decades. The man has now been sentenced to 16 years in federal prison after being charged with weapons possession. The 45-year-old man, already a felon from a previous conviction, was sentenced to 188 months in prison along with another 5 years of supervised release. In the federal system, there is no opportunity for parole.
This man was arrested after having a standoff with police. He was armed at the time, and those charges are filed separately with the state. He received an enhanced sentence after being called a career criminal and likely due to the violence shown toward police.
If you are ever pursued or arrested by police, remember that lashing out is not going to help your case. You want to be as compliant as possible without talking to the police so that you can protect yourself but also retain a positive reputation. No one wants to have an enhanced penalty, but it's possible to obtain one by adding violence to a list of offenses. Be cautious when you interact with the law, so your attorney can take steps to protect you in court.