Kidnapping is for ransom. 18 USC 1201. Death penalty attaches only if the kidnapping results in a death.
As for trafficking, not a death penalty offense.
https://www.law.cornell.edu/uscode/text/18/part-I/chapter-77
18 USC Chapter 77 - Peonage, slavery, and trafficking in persons
https://www.law.cornell.edu/uscode/text/18/1591
18 USC 1591 - Sex trafficking of children or by force, fraud, or coercion
15 to life. Actual sentence is judge's whim tempered by mandatory minimums.
See too, 18 USC 2421 et seq for interstate. Similar penalties, no death penalty.