Tate Letter (1952) — Restrictive Sovereign Immunity
doctrineThe Vatican & Religious Power
A single 1952 State Department letter decided foreign governments can be sued when they act like businesses — not kings.
Who they are
The Tate Letter, issued by the US State Department on May 19, 1952.
What they do
It announced the 'restrictive' theory of sovereign immunity — governments are protected for governmental acts but not for their commercial dealings.
How it works
It drew a line between a state's official acts (still immune) and its commercial or business acts (no longer immune), and this rule was later written into US law as the 1976 Foreign Sovereign Immunities Act.
Why it matters
The engine treats it as the moment a government's blanket legal shield got partially peeled back — and it holds the deeper interpretations open rather than asserting them, noting the documented fact that the State Department and Congress were the authors.
The engine's record — word for word
[in-scope 1200-2040; new record] US State Dept, 19 May 1952; announced the RESTRICTIVE theory of sovereign immunity — immunity for governmental acts (jure imperii) but NOT for commercial/proprietary acts (jure gestionis); codified 1976 in the Foreign Sovereign Immunities Act (FSIA). Structural class: a NARROWING of the immunity carve-out — the point where the sovereign-immunity exemption (#100) is partially withdrawn. DOCUMENTED FACT: author-of-record = the US State Dept / Congress (FSIA); effect = limits the carve-out. Readings HELD, not asserted. Cross-links: ior_vatican_bank, princely_house_of_liechtenstein. Tier-1/2 (Michigan Law Review; State Dept).
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