Boris Johnson
Boris gave up his US citizenship for this very reason:
https://www.theguardian.com/politics/2017/feb/08/boris-johnson-renounces-us-citizenship-record-2016-uk-foreign-secretary
Boris gave up his US citizenship for this very reason:
https://www.theguardian.com/politics/2017/feb/08/boris-johnson-renounces-us-citizenship-record-2016-uk-foreign-secretary