"the US has undoubtedly the best higher education system in the world now"...Are you sure about that? It is almost impossible to find undergraduate education fo

"the US has undoubtedly the best higher education system in the world now"...Are you sure about that? It is almost impossible to find undergraduate education for electrochemistry, for example https://www.acs.org/education/students/highschool/collegeplanning/earningachemistrydegree.html https://www.acs.org/education/students/highschool/collegepla... Hence applicants for PhD level education come from all over the world just not the US. Elecgtrochemistry is the backbone for battery, fuel cell or electrolyzer development. For companies, startups in particular, this becomes a challenge when you need to hire qualified team members, you invest in them and after two or three years they have to leave the country and you start from scratch. In the UK if your team member works on an employer (!) sponsored visa for 5 years s/he becomes a UK resident.