Is there anything unconstitutional about Congress's bill?

This is old but most direct I found in short search:

THE AMERICAN LAW REGISTER. OCTOBER, 1870.THE POWER OF THE JUDICIARY TO DECLARE AN ACT OF CONGRESS VOID FOR UNCONSTITUTIONALITY

https://scholarship.law.upenn.edu/cgi/viewcontent.cgi?referer=&httpsredir=1&article=2398&context=penn_law_review

By limiting the ability to deal with people committing crimes- entering the country illegally- is this discriminating against citizens who commit crimes, where no limit seems to be placed on dealing with them?