There's a lot of discussion right now about whether various politicians are actually communists or not. How should that be adjudicated? A reasonable place to start might be comparing their views with those of the Communist Manifesto.
For reference, these are the famous planks of communist revolution:
- Abolition of Property in Land and Application of all Rents of Land to Public Purpose.
- A Heavy Progressive or Graduated Income Tax.
- Abolition of All Rights of Inheritance.
- Confiscation of the Property of All Emigrants and Rebels.
- Centralization of Credit in the Hands of the State, by Means of a National Bank with State Capital and an Exclusive Monopoly.
- Centralization of the Means of Communication and Transport in the Hands of the State.
- Extension of Factories and Instruments of Production Owned by the State, the Bringing Into Cultivation of Waste Lands, and the Improvement of the Soil Generally in Accordance with a Common Plan.
- Equal Liability of All to Labor. Establishment of Industrial Armies, Especially for Agriculture.
- Combination of Agriculture with Manufacturing Industries; Gradual Abolition of the Distinction Between Town and Country by a More Equable Distribution of the Population over the Country.
- Free Education for All Children in Public Schools. Abolition of Children's Factory Labor in it's Present Form. Combination of Education with Industrial Production.
I don't think any prominent American politician scores above 4/10 on this. The more accurate term for American politicians is "fascist". They generally seek to exercise power through pressuring the private sector to do the state's bidding.