Bullshit. It's true that the US has increased its economic pressure against Venezuela. But the government has many ways to go around them and crisis of the country was caused by the socialists themselves and it goes way back, even when Chavez was still alive, it was hard finding things like milk and sugar. How else can you explain things like Chavez and his family becoming so rich in so little time and the "socialists" having so many properties in the US?

The sanctions of the US have focused on freezing the bank accounts the socialists have in the US itself and taking over their properties. Here is a list of them:

https://www.state.gov/e/eb/tfs/spi/venezuela/