Legal threat to councils over Gypsy and traveller sites
Councils across Wales could face prosecution under a proposed new housing bill unless new Gypsy and traveller sites are built.
The bill will be voted on this autumn and about 400 new pitches are needed.
In areas such as Swansea and Newport there is fierce opposition to plans for new sites.
Supporters say a new law would force councils to do more as the travellers have human rights, and a way should be found to accommodate them.
Tim Rogers reports.
Week in Week Out is on BBC One Wales on Tuesday 11 June at 22:35 BST.