How common is moving office to another country?

How facilitating or even open to the idea would most companies be?

In terms of allowing me to move from the Irish office here to one in say the US (I have citizenship), Canada or Australia?

Is there any possibly for someone with 3 years experience? Pretty much hoping the US citizenship I have makes it a lot more likely to switch to one of their US offices but no idea if that is actually common at all or if they’d just tell me to forget it.