Ask HN: Co-founders living in different countries

Let's say I have an idea for a startup and that I want to find a co-founder to help me with developing and launching it to the market. Let's also assume that I live in a developing country (e.g., Brazil) and that I want to register the company in the US. Is it too inconvenient for co-founders to live in different countries? If anyone has experience with this or has done something similar, your thoughts and opinions are more than welcome!