Israeli settlers terrorize Palestinians

*Government [of Australia] joins more than a dozen countries to say settlers are "terrorising" Palestinians in "unacceptable" violence.*

Thank you Australia for recognizing this.

*American citizens have been at the forefront of the rise of settler violence in the occupied territories, and the ongoing ethnic cleansing of Palestinians from their land, but as US passport holders they cannot be barred from [going to the US].*

It seems to me that these crimes call for a response that goes beyond barring them from returning to the US. That response by itself won't have much effect on them. Can the US prosecute them for violent hatred and violations of human rights, committed outside the US?