Are there visas available for those in blue collar trades like this? I’m wondering if they’re also protected from immigration related market forces on wages
Electrical wiring practices differ from country to country. Anyone coming in on a visa would need some retraining if only to learn the local regulations.
You can sling Javascript the same way in Chennai or in Cleveland, but I wouldn't want a UK electrician wiring my house in California.
Probably not, but the main issue would be that overseas certifications aren't valid. I'm sure it would be quicker to recertify / learn the local regulations than to start from scratch, but it's not free.