Simple investment advice for my French brother living in the US

Hello there, I need some help to get some financial guidance for my brother, a French citizen who has been living in the United States for the past eight years. He is married to an American citizen and is in the process of obtaining his green card, with the intention of staying in the US permanently.

My brother has a tendency to let his savings accumulate in a standard checking account and procrastinates on investment decisions. I want to suggest a straightforward, easy-to-manage investment strategy for the portion of his money that he doesn't need for short-term expenses.

In France, we have "fonds en euros," which are zero-risk investment products giving 2% yearly. My understanding is that the closest equivalent in the US would be short-term government bonds.

I'm considering proposing a simple two-fund portfolio. The allocation between the two can be adjusted based on his risk tolerance, and he could use dollar-cost averaging (DCA) to enter the market. The proposed portfolio would consist of:

• iShares 0-3 Month Treasury Bond ETF (SGOV): This would serve as the low-risk component of his portfolio, similar to a "fonds en euros."
• Vanguard Total World Stock ETF (VT): This would provide broad exposure to the global stock market, akin to MSCI World ETFs like CW8 or WPEA that we are familiar with in Europe.

We are thinking of using an international brokerage firm like Interactive Brokers (IBKR) to set this up.

I would appreciate the community's feedback on this approach. Is this two-fund portfolio a sound and simple strategy for someone in my brother's situation? Are there any other or better alternatives we should consider? Any advice or insights you could offer would be greatly appreciated.