Comparison
Read two legal systems against each other
Because every portal follows the same fifteen-section outline, the comparison is genuinely like-for-like rather than a collage of whatever each government happens to publish.
Select up to six documented jurisdictions
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| Attribute | ThailandReviewed | United StatesReviewed |
|---|---|---|
| Legal family | Civil law | Common law |
| System of government | Constitutional monarchy | Federal presidential constitutional republic |
| Constitution | Constitution of the Kingdom of Thailand | Constitution of the United States |
| In force since | 2017 | 1789 |
| Capital | Bangkok | Washington, D.C. |
| Official languages | Thai | English, Spanish |
| Currency | Thai baht (THB) | US Dollar (USD) |
| Population | 71,700,000 | 335,000,000 |
| Division of powers | Unitary and centralised, with 76 provinces headed by appointed governors plus Bangkok, which elects its own governor. Pattaya has a special administrative status. Local administrative organisations exist at municipal and sub-district level with limited functions, and the deep south provinces are subject to special security legislation. | Strict separation between Congress, the President and the federal judiciary, checked by veto, impeachment, advice-and-consent over appointments, and judicial review established in Marbury v. Madison (1803). |
| How law is made | Bills pass three readings in the House of Representatives and are then considered by the Senate, which may delay. Money bills require Cabinet endorsement. Before royal assent, a bill may be referred to the Constitutional Court for pre-enactment review. The King signs; if assent is withheld, Parliament may reaffirm the bill by a two-thirds majority after 90 days. Constitutional amendment requires specified majorities in a joint sitting including Senate support, and referendums for some chapters. | A bill is introduced in either chamber, referred to committee, reported, debated and voted. It must pass both chambers in identical text, then be signed by the President or survive a veto by a two-thirds vote in each chamber. |
| Legal profession | Lawyers are licensed by the Lawyers Council of Thailand under the Lawyers Act 1985 after a law degree and the ethics course; a separate and much harder Thai Bar Association examination is required for judicial and prosecutorial careers. Notarial services are performed by lawyers holding a notarial services attorney licence. Foreign lawyers may not appear in Thai courts and foreign ownership of law firms is restricted under the Foreign Business Act. | Admission is state-by-state: an accredited JD, a state bar examination, and a character and fitness review. There is no split between barristers and solicitors. |
A comparison table flattens nuance by design. Where a difference matters to a decision you are making, open both portals and read the section in full — the constitutional detail behind a one-line summary is often the part that governs the outcome.