In the United States, the Speaker of the House is not required to forfeit their business interests entirely. However, they are subject to certain ethics rules and disclosure requirements.

According to House Ethics Committee rules, the Speaker must:

1. Disclose their financial interests, including business holdings, in their annual financial disclosure statements.
2. Recuse themselves from matters that could affect their personal financial interests.
3. Avoid using their official position for personal financial gain.

While the Speaker is not required to divest themselves of all business interests, they are expected to manage potential conflicts of interest and maintain the public's trust.

It's worth noting that some Speakers have chosen to divest themselves of certain business interests or place them in blind trusts to avoid potential conflicts of interest.