Originalist vs textual interpretation. Scalia and Gorsuch (both Federalist Society members, as are the candidates on Trump's SC list) are originalists.
https://fedsoc.org/commentary/publications/originalism-in-a-nutshell
What is originalism? It is a bedrock of constitutional interpretation for federalists, but many have found it difficult to define comprehensively what it means. Originalism is, broadly speaking, a catchall term for methods of constitutional interpretation principled on fidelity to the Constitution. It represents not one school of thought but a spectrum of theories about how the Constitution should be interpreted.