"You can come to my country."
Here's the breakdown:
* tu: you
* puedes: can
* venier: come (this is a slightly informal form of "venir," which is the more standard way to say "come")
* a mi pais: to my country
Important Note: "Venier" is a little informal, so it's better to say "You can come to my country" or "You are welcome to come to my country" for a more formal tone.