Free movement of factors of production (goods, services, person & capital)
What are goods? Not defined in Treaties
Commission v Italy (Art Treasures) Case 7/68 -
"products which can be valued in money and which
are capable, as such, of forming the subject of
commercial transactions"
Then...
TFEU Art.26(1) - "The union shall adopt measures with the aim of
establishing or ensuring the functioning of the internal market, in
accordance with the relevant provisions of the Treaties"
TFEU Art.26(2) - The internal market shall comprise an area without
internal frontiers in which the free movement of goods, persons,services
and capital is ensured in accordance with the provisions of the Treaties"
Dismantle existing barriers and prohibit new barriers to trade
National measures prohibited if a barrier to trade