New Zealand's government-managed investment pools have always been vulnerable to political interference, despite the official hands-off policies.
Some years back, for instance, Bill English issued a directive to the NZ Superannuation Fund (NZS) to invest more in local assets, which it has.
But the National government hasn't so far even mooted the prospect of completely draining the Crown investment pools to fill current liquidity demands (with the quite legitimate exception of the $6-7 billion Earthquake Commission fund).
In fiscally-restrained times, however, the government-invested funds are too tempting for some to resist. Most notably, NZ First leader Winston Peters has called for the NZS to fund the buy-back of state-owned assets (if and when a sale happens), while former ACT leader, Rodney Hide, (writing in some publication whose name escapes me) wants the government to liquidate the lot on some deranged principle.
Both proposals might prove difficult to implement: it's not that easy to conduct a $20 billion fire sale.