No surprises here, really.
Whenever there is a change in any part of the world where the final beneficiary are free trade agreements, privatization, and increase of neo liberal policies you can be sure the American finger is behind it. In global times, the expansion to all corners of the planet is vital for their profits. In fact, It’s been like that since Columbus landed here and the imperialism started. Before it was done through the genocide of local inhabitants and slavery of minorities, then through wars (still very effective today), but since the 1920’s these actions got an important ally: the support of the main corporate media that controls, misinforms and manufactures the consent of millions that follow their manipulated news blindly like cows heading to their slaughter.
Wikileaks report here: https://wikileaks.org/plusd/cables/06SAOPAULO689_a.html