Looks like a relevant law might be "18 U.S.C. §1203": * https://www.law.cornell.edu/uscode/text/18/1203 https://www.law.cornell.edu/uscode/text/18/1203 * http

Looks like a relevant law might be "18 U.S.C. §1203": * https://www.law.cornell.edu/uscode/text/18/1203 https://www.law.cornell.edu/uscode/text/18/1203 * https://www.justice.gov/archives/jm/criminal-resource-manual-11-hostage-taking-18-usc-1203 https://www.justice.gov/archives/jm/criminal-resource-manual... This seems to fit American-citizens holding your daughter, with threat to continue doing so, in order to compel you to do something (like sign a contract).