NALBANDIAN, Circuit Judge. The Pipeline and Hazardous Materials Safety Administration imposed a civil penalty on Wolverine Pipe Line Company for violating two of its pipeline regulations. Wolverine claims this action was arbitrary and capricious and violated its due process rights. We disagree, and we affirm the agency’s decision and deny Wolverine’s petition.

MATHIS, Circuit Judge. H.K., a high-school student at Freeland Community School District, created a fake Instagram account impersonating one of his teachers. The account was benign at first, but soon became graphic, harassing, and threatening when two of his friends added their own posts to the account. News of the account spread fast, fueled by the students’ own efforts. They accepted requests to follow the account and H.K.’s friends tagged teachers in their posts. H.K. eventually decided that the attention was too much and he deleted the account.

The school traced the account to H.K. and the other two students and imposed an immediate five-day suspension pending further investigation. After concluding the investigation and providing H.K. with an administrative hearing on the matter, the school suspended him for ten days.

H.K.’s father, Jason Kutchinski, then sued the school district, the principal, and the superintendent under 42 U.S.C. § 1983, claiming that the ten-day suspension violated H.K.’s free-speech and due-process rights. The district court denied Kutchinski’s motion for partial summary judgment and granted summary judgment to Defendants. Because Defendants had the authority to regulate H.K.’s off-campus speech and because the rule Defendants relied on to discipline H.K. was sufficiently definite, we affirm.

THAPAR, Circuit Judge. Jarmaine Carter pled guilty to illegally possessing a firearm. Because Carter had been convicted of robbery, the district court enhanced Carter’s sentencing range. On appeal, Carter argues the enhancement was improper because robbery isn’t a crime of violence. We disagree and affirm.