Answer the fear before you ask for the call.
Your service pages should answer that fear before they ask for the call, because a reader who fears the call will not make it.
Keep the articles that lead to a case you take, and delete the rest.
A blog of AI-written posts on every immigration subject brings readers who are not looking for a lawyer. Delete the posts that lead to no case you take; the ones that still rank keep their addresses, are upgraded and lead to the service they belong to.
Publish in your clients' language only where your intake speaks it.
A page in the language your clients search in reaches searches an English page never sees, and it pays only when the form, the phone and the first reply are in that language too. Each language version gets its own address, linked to the others with hreflang, as Google asks.
Tie every legal fact to the source it comes from.
Filing fees, form editions and priority dates change, so each page names the USCIS page, form or Visa Bulletin it relies on, and the firm approves the legal answer before it goes live. Law firm content marketing sets out who checks what, and when. With access to the site, approvals like this are all the firm has to give an attorney SEO company.
Build city pages only where the firm has an office.
Immigration law is federal, so immigration lawyer SEO can win clients far beyond the office city, and search engine optimization for immigration attorneys is built on case-type pages rather than city pages. Those clients are won by pages about the case types; a page for each city that repeats the same answer with a new place name only competes with the firm's own pages. Law firm local SEO covers the offices you do have.