Because "it hasn't been properly implemented in the US", right?
Actually socialism was fully tested both in the US during the country's inception, and in a proxy American colony in Jametown, Guyana.
And in both cases, socialism not only failed miserably but 440 people died in Jamestown, USA and 900 people died in Jonestown Guyana.
Look upon the facts if you have the balls and humility to accept what socialism realty stands for...
Socialism at Jamestown
https://www.cato.org/blog/socialism-jamestown
Socialism at Jonetown
"Jonestown was held up as a benevolent
communist community, with Jones stating: "I believe we're the purest communists there are."
[40] Jones' wife, Marceline, described Jonestown as "dedicated to live for socialism, total economic and racial and social equality. We are here living communally."
[40] Jones wanted to construct a model community and claimed that Burnham "couldn't rave enough about us, the wonderful things we do, the project, the model of socialism".
[41] Jones did not permit members to leave Jonestown without his express prior permission.
[42]
Jonestown - Wikipedia
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