Sacks made two linked claims: (1) federal interest expense, already around/above $1T per year, would keep rising as debt rolled into higher rates; and (2) entitlement spending driven by demographics would keep growing.

1. Interest expense has in fact kept rising and crossed $1T.

• Net interest outlays were about $658–659 billion in FY 2023. (ceicdata.com)
• CBO’s Monthly Budget Review for September 2024 reports that net interest on the public debt increased by about $240 billion in FY 2024, reaching roughly $950 billion—very close to the “over a trillion” figure he cited conversationally and a massive jump from 2023. (einpresswire.com)
• The next year, FY 2025, CBO estimates that net interest on the public debt surpassed $1 trillion for the first time, confirming that the interest burden continued to grow after 2024. (edwardconard.com)
• CBO’s 2025 and long‑term outlooks project net interest payments continuing to climb over the coming decade (roughly doubling again by the mid‑2030s), consistent with his “keep growing” / “foreseeable future” language. (crfb.org)

His exact statement that interest was already “over a trillion” in 2024 is a bit ahead of the finalized net‑interest data (~$950B), but by 2025 the run‑rate and official estimates do cross $1T, and the directional prediction (ongoing growth as higher‑rate debt rolls over) is borne out.

2. Demographically driven entitlement spending is also rising.

• Treasury’s own analysis of FY 2024 notes that the increase in total outlays was partly due to higher spending on Social Security and Medicare attributable to demographic aging. (fraser.stlouisfed.org)
• Estimated Social Security expenditures rose to about $1.5T in FY 2024 and are projected around $1.6T in FY 2025, reflecting more beneficiaries and COLAs—clear year‑over‑year growth. (x.com)
• Reuters and CBO reporting on FY 2025 confirm that spending on Social Security, Medicare, and Medicaid continued to increase in 2025. (reuters.com)
• CBO, the Social Security and Medicare Trustees, and multiple fiscal analyses all attribute the long‑run rise in these programs to population aging and health‑care cost growth, with Social Security and federal health programs projected to keep rising as a share of GDP over the coming decades. (crfb.org)

Given (a) the realized increases in net interest from 2023→2024→2025, culminating in >$1T by 2025, and (b) the continued and demographically driven growth in major entitlements over the same period (with projections showing further increases ahead), Sacks’s macro‑level prediction is substantially correct. Minor numerical imprecision on the exact timing of “over a trillion” in 2024 doesn’t change that the core forecast—that both interest expense and entitlement spending would keep rising from 2024 onward—has been validated by subsequent data and official projections as of late 2025.