Intelligence agencies have no issue breaking the law, so no, keeping data in the US does not keep it safe from the NSA/CIA et al. This was about Law enforcemen

Intelligence agencies have no issue breaking the law, so no, keeping data in the US does not keep it safe from the NSA/CIA et al. This was about Law enforcement, they do need warrants to get and use the data obtained. Data in the US would only need a domestic warrant, which is never going to be hard to obtain. Microsoft was arguing that data in Ireland was out of the domain of US domestic warrents, and the judge agreed. Your data is safer from the US when it is outside the US. At least law enforcement doesn't have carte blanche access to it.