The main reason is to cut out Eastern Europe out of the pipeline without affecting supply to Germany, and to get rid of some transit costs. There is no real need for Nordstream to get gas to Germany, it is just that Russian gas companies can't shut off the valve to Poland or Ukraine without also shutting off the supply to Germany, which would be a huge problem. Conversely, those countries could also shut off supply to Germany and Western Europe, which would also cause issues. Nordstream put those transit countries in a weaker position compared to Russia. The easy reason for the US being against Nordstream is Ukraine, where a lot of pipeline infrastructure is situated today.
I remember doing assignments about this back when it was just Nordstream almost 20 years ago, way before Euromaidan and back when Schröder was chancellor.
The main reason is to cut out Eastern Europe out of the pipeline without affecting supply to Germany, and to get rid of some transit costs. There is no real need for Nordstream to get gas to Germany, it is just that Russian gas companies can't shut off the valve to Poland or Ukraine without also shutting off the supply to Germany, which would be a huge problem. Conversely, those countries could also shut off supply to Germany and Western Europe, which would also cause issues. Nordstream put those transit countries in a weaker position compared to Russia. The easy reason for the US being against Nordstream is Ukraine, where a lot of pipeline infrastructure is situated today.
I remember doing assignments about this back when it was just Nordstream almost 20 years ago, way before Euromaidan and back when Schröder was chancellor.