- Obama has had constructive policies towards Latin America, i.e. improved relations with Cuba, downplaying the "war on drugs", and immigration reform.
- End of commodity boom (& therefore the end of loose fiscal policy) is changing regional politics - the "pink tide" of left wing governments is on the wane (e.g Rousseff in Brazil, Kirchner in Argentina, Correa in Ecuador all under pressure).
- Therefore expected that pragmatism (i.e. working with the US) might be favoured over ideology (i.e. might see improved relations with the US).