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Title 31

Displaying title 31, up to date as of 6/16/2026. Title 31 was last amended 5/06/2026.
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Title 31Money and Finance: TreasuryPart / Section
Subtitle BRegulations Relating to Money and Finance51 – 1099
Chapter VIIIOffice of Investment Security, Department of the Treasury800 – 899
Part 800Regulations Pertaining to Certain Investments in the United States by Foreign Persons800.101 – 800.1108
Part 801Pilot Program to Review Certain Transactions Involving Foreign Persons and Critical Technologies801.101 – 801.602
Subpart AGeneral801.101 – 801.103
Subpart BDefinitions801.201 – 801.214
Subpart CPilot Program Covered Transactions801.301 – 801.306
Subpart DMandatory Declarations Under the Pilot Program801.401 – 801.409
Subpart ENotice of Pilot Program Covered Transaction801.501 – 801.504
Subpart FImplementation of Certain Authority Provided In FIRRMA801.601 – 801.602
Annex A to Part 801
Industries
Part 802Regulations Pertaining to Certain Transactions by Foreign Persons Involving Real Estate in the United States802.101 – 802.1108
Parts 803-849 [Reserved]
Part 850Provisions Pertaining to U.S. Investments in Certain National Security Technologies and Products in Countries of Concern850.101 – 850.904
Subpart AGeneral850.101 – 850.104
Subpart BDefinitions850.201 – 850.229
Subpart CProhibited Transactions and Other Prohibited Activities850.301 – 850.303
Subpart DNotifiable Transactions and Other Notifiable Activities850.401 – 850.406
Subpart EExceptions and Exemptions850.501 – 850.503
Subpart FViolations850.601 – 850.604
Subpart GPenalties and Disclosures850.701 – 850.704
Subpart HProvision and Handling of Information850.801 – 850.802
Subpart IOther Provisions850.901 – 850.904
Parts 851-899 [Reserved]