Parent was making an observation that the entire US political discourse, including both sides, tends to be right of global center.

The Left Right dichotomy is a fairly broad set of political ideas, especially globally. The Left typically includes socialists, communists, anarchists, labor movements, syndicalists, and social democrats. Typically, these movements are collectivist, whether that's collectivist in a big government or collectivist in small local communities.

Classical liberal policies, looks those of the Democrats and Republicans, are right of center.

An example, when was the last time the Democratic Party pushed for nationalization of a whole industry? Eg aerospace, rail, or energy? What about offering food and housing for everyone? Abolishing private property? Those are leftist policies.