united states - Should I do a second PhD in Canada or the US?

I am three years into a PhD in Germany in an interdisciplinary social sciences field (Global Integration/Global Studies), but I am quite disillusioned with the faculty and the quality of guidance here. Moreover, the academic job prospects are not very good after the PhD, and any other job, given EU regulations, is hard to get (I am non EU). Going back to my country, given the corruption in academics, is also not an option. I am thinking of dropping this, and applying for PhDs in Canada or the US.

Is this a good option? I would apply for single discipline such as political science. I am thinking of international business too, because my work is a policy relevant field.