The sixth Amendment is very specific, that the accused only has the right to the “assistance of counsel” and this assistance of counsel can be anyone the accused chooses without limitations.
Meyer v. Nebraska, “The term [liberty] … denotes not merely freedom from bodily restraint but also the right of the individual to contract, to engage in any of the common occupations of life, to acquire useful knowledge, to marry, to establish a home and bring up children, to worship God according to the dictates of this own conscience… The established doctrine is that this liberty may not be interfered with, under the guise of protecting public interest, by legislative action8.”
Schware v. Board of Examiners, “The practice of law cannot be licensed by any State9.” …
Schware v. Board of Bar Examiners, “a State cannot exclude a person from the practice of law or from any other occupation in a manner or for reasons that contravene the Due Process Clause10.” …
Sims v. Aherns, “The practice of law is an occupation of common right11.” …
Sherar v. Cullen, Therefore “there can be no sanction or penalty imposed upon one because of
his exercise of Constitutional Rights12.”
Brotherhood of Trainmen v. Virginia State Bar, “Litigants can be assisted by unlicensed
laymen during judicial proceedings13”…
NAACP v. Button, “Members of groups who are competent non-lawyers can assist other members of the group achieve the goals of the group in court without being charged with “unauthorized practice of law14.” …
Federal Rules of Civil Procedures, Rule 17, “A next friend is a person who represents someone who is unable to tend to his or her own interest15.”