18 USC 2261A - Stalking

Whoever
(1) travels in interstate or foreign commerce or within the special maritime and territorial jurisdiction of the United States, or enters or leaves Indian country, with the intent to kill, injure, harass, or place under surveillance with intent to kill, injure, harass, or intimidate another person, and in the course of, or as a result of, such travel places that person in reasonable fear of the death of, or serious bodily injury to, or causes substantial emotional distress to that person, a member of the immediate family (as defined in section 115) of that person, or the spouse or intimate partner of that person; or
(2) with the intent
(A) to kill, injure, harass, or place under surveillance with intent to kill, injure, harass, or intimidate, or cause substantial emotional distress to a person in another State or tribal jurisdiction or within the special maritime and territorial jurisdiction of the United States; or
(B) to place a person in another State or tribal jurisdiction, or within the special maritime and territorial jurisdiction of the United States, in reasonable fear of the death of, or serious bodily injury to
(i) that person;
(ii) a member of the immediate family (as defined in section 1151 of that person; or
(iii) a spouse or intimate partner of that person; uses the mail, any interactive computer service, or any facility of interstate or foreign commerce to engage in a course of conduct that causes substantial emotional distress to that person or places that person in reasonable fear of the death of, or serious bodily injury to, any of the persons described in clauses (i) through (iii) of subparagraph (B);[2]

shall be punished as provided in section 2261 (b) of this title.

[1] So in original. Probably should be followed by a closing parenthesis.
[2] So in original. Provision probably should be set flush with par. (2).