I would think that ceiling exists in almost all countries, and US (and especially SV) does pretty well in terms of having non-natives in the higher rings of management. For example, Germany might have 20+ millions people with foreign roots (20%+ of population) and might look very welcoming to them, but you'd be hard pressed to find many in higher management roles.
>>cangen+(OP)
Uhm, it’s quite easy to find foreigners in top positions at German companies, especially international ones. How many of SAP’s C-suite are even German? Not hard pressed at all.