Part IX — Separation of Powers & Checks

Derived from Axiom 4 (every power has a proportionate check, including the checkers) and Axiom 12 (subsidiarity). This arranges every institution in the model so that no branch — including the new ones (experts, integrity, sortition) — can dominate, and so the whole forms a closed web of mutual accountability.

IX.1 The branches of the state

The classic three-branch model is insufficient here because this design adds expert execution, an integrity function, and selection-by-lot. The model has five loci of power, each checking the others:

No branch holds power in its own right; each is delegated and checked (Axiom 1, 4).

IX.2 The bicameral legislature — election and lot

The mandate (Part III) is expressed through two chambers that check each other:

Representative Assembly (elected by STV+, Part III)

• Proposes and makes law; sets national priorities and budgets; confirms appointments (§IV.4).
• Accountable to the electorate; proportional and locally linked.

Citizens' Sortition Chamber (selected by lot, Part II.3)

• Demographically representative, paid, expert-briefed, deliberating over time.
• Scrutinises legislation; can require reconsideration / delay (a suspensory check, not a permanent veto); deliberates the value trade-offs flagged under §V.4.
• Immune to campaign money, lobbying, and re-election incentives — the antidote to the elected chamber's characteristic weaknesses.

Interaction: the Assembly governs and legislates; the Sortition Chamber reviews, delays, and rules on flagged value questions. Neither can dominate: the Assembly cannot ignore the Chamber's reconsideration demand without a transparent supermajority override; the Chamber cannot legislate alone. Election supplies accountability; lot supplies incorruptibility; together they supply both.

IX.3 The executive and the head of state

• The executive function is the Expert Execution Layer (Part IV) delivering the mandate, coordinated by a head of government accountable to the legislature, term-limited, and removable.
• The executive executes; it does not set values or make law — those come from the people and the legislature (§0.5).
• Head of state: holds no governing power whatsoever (Axiom 1: no hereditary or perpetual governing power). The office is ceremonial and unifying only. Whether it is a reformed, strictly-ceremonial monarchy or an elected non-executive presidency is a value choice for the people (escalated per §V.4) — but in either case governing authority never attaches to it. The model's recommended resolution is an elected, non-executive Head of State (§XVIII D2), as the option most consistent with the axioms.

IX.4 Judicial independence and review

• The Rights & Constitutional Court enforces the Charter (§I.8): it may strike down any act — legislation, expert decision, emergency measure — that breaches the Charter.
• Independence: appointment is independent and term-limited; judges are removable only for cause by a defined process; the Court's funding is protected.
• Limits on the Court (Axiom 4): it interprets, it does not legislate or amend; it cannot make policy. It is monitored for integrity by the Integrity Assembly and can be overruled only by the people via the §I.9 amendment route — never by the executive or experts it constrains.
• An independent ordinary justice system handles civil and criminal matters, with the usual due-process guarantees (§I.3).

IX.5 The web of mutual checks

Every branch is checked by at least two others, closing Axiom 4 system-wide:

There is no apex. The chain of checks terminates only in the people and the unamendable core — by design, so that no single institution sits above the rest.

IX.6 Subsidiarity and local government

Power defaults to the most local effective level (Axiom 12):

• Local and regional government mirrors the national model at appropriate scale — elected representation (STV+), expert delivery within mandate, and integrity oversight.
• The centre must justify centralisation — the burden is on the national level to show why a decision cannot be made locally, not the reverse.
• Fiscal subsidiarity — local bodies have the resources and revenue powers to match their responsibilities, with transparency and anti-corruption applying identically (Part VI).

IX.7 The free press and information ecosystem

A free press is a check the constitution cannot fully formalise but must protect:

• Independence guaranteed — no state control or capture of the press; plurality of ownership protected against monopoly (a capture vector).
• Protection for journalists and sources, including whistleblowers (§VI.9).
• Disinformation is met with transparency, provenance, and verifiable truth — never censorship (§II.5, §III.8, §VIII) — because a state that decides what may be said has already failed §I.3.
• The Public Information function (§II.5) complements, but never replaces or crowds out, an independent press.

IX.8 Intergenerational representation

Future citizens cannot vote, yet today's decisions bind them (Axiom 13). The model gives them a voice:

• A Future Generations mandate (a commissioner role and a standing duty within the Sortition Chamber) must assess and publicly report the long-run and intergenerational impact of major decisions (debt, environment, irreversible commitments) — modelled on, and stronger than, Wales' Well-being of Future Generations approach.
• The wellbeing objective (§0.2) and outcomes ledger (§VI.7) explicitly weight the long run, so short-termism is measured and visible.

IX.9 Failure modes and safeguards

Part IX ends. The core institutional design is complete: sovereign people, an honest mandate, competent bounded execution, integrity and self-review, crisis resilience, a verifiable tech substrate, and a closed web of checks. Next: the wider constitution — Part X — Public Finance & the Fiscal Constitution.