As of the 2024–2026 tax years, the top U.S. federal individual income tax rate remains 37%, with seven brackets from 10% to 37%; there has been no move to a ~70% top marginal rate on high‑income individuals.

• The IRS’s official 2024 brackets show the top marginal rate is 37% for single filers above $609,350 and married joint filers above $731,200, with no higher bracket enacted. (irs.gov)
• Inflation‑adjusted brackets released for 2026 still keep the same seven rates—10%, 12%, 22%, 24%, 32%, 35%, and 37%—with the 37% rate applying above roughly $640,600 for single filers, again with no 70% bracket. (taxfoundation.org)
• A major 2025 tax law (“One Big Beautiful Bill”) described in tax‑policy coverage permanently extends the current rate structure rather than raising top marginal rates, confirming that U.S. policy is not currently trending toward a 70% top federal bracket. (theweek.com)

The prediction also included an attitude component (that such very high rates would be broadly popular among non‑wealthy voters). Because no such 70% top rate has been implemented, that part of the prediction cannot yet be tested.

However, Friedberg’s wording in the original quote is open‑ended (“we’ll end up seeing 70% tax rates on the wealthiest people”) and does not specify a clear deadline; the user’s paraphrase (“within the coming years”) is somewhat vague and could reasonably cover a span longer than the ~2½ years that have elapsed since April 2023. Since the prediction concerns an eventual tax regime change that could still occur in the future, and there is no hard time horizon that has clearly expired, it is too early to say it is definitively wrong.