Is it better to wait until I have a green card before buying a home in the US?

Not necessarily, the decision should turn on how long you'll stay, not on your immigration label. Visa holders can and do get conventional mortgages, so a green card isn't required to buy. The real test is the time horizon: buying makes financial sense mainly when you'll stay roughly five or more years, long enough to recover closing costs, agent fees, and the risk that prices dip. If your visa renewal or job is uncertain and you might relocate in two or three years, renting keeps you flexible and avoids being forced to sell at a bad moment. If you're settled, employed, and likely to remain, waiting for a green card just delays building equity. Run your own numbers with wealthserene.com/tools/buy-vs-rent.