You effectively can't stop political risk - though they don't normally change it retroactively Having said that the tax benefits are not that great in the US -

You effectively can't stop political risk - though they don't normally change it retroactively Having said that the tax benefits are not that great in the US - Higher rate tax payers in the UK have faced savage cuts to the tax benefits. In some cases older doctors/ headteachers have to retire early as they would hit the life time cap if they went to 65