Are There Any Criminal Offences That Do Not Require a Waiver Before Travel to the U.S.?

One (and only one) impaired driving charge or a simple assault charge may not cause you denial when attempting to enter the U.S.  Whether you are allowed entry is completely at the discretion of Customs & Border Protection (CBP) Officers at the time of your attempt to enter. CBP Officers have absolute authority to deny entry to a traveler on the basis of any charge or suspicion of your criminal record.  For the vast majority of criminal records, it is necessary to apply for a U.S. Waiver application.