This Amendment gives the Congress no power over speech content.
Image, Andrea Reidl
Image processed, Studio Under the Bed
Within the restrictions this amendment sets,
sole public campaign funding can be mandatory
without substantially burdening speech
or exceeding the Constitution's allowed regulation of political speech.
The Electoral clause in Article I, section 4 allows Congress to regulate electoral conduct by
time, place or manner.
"Congress shall make no law respecting an establishment of religion,
or prohibiting the free exercise thereof;
or abridging the freedom of speech, or of the press;
or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances."
Article I, Section 4:
"The Times, Places and Manner of holding Elections for Senators and Representatives,
shall be prescribed in each State by the Legislature thereof;
but the Congress may at any time by Law make or alter such Regulations,
except as to the Place of Choosing Senators."
Amendment XXVIII, (proposed), Section 1:
“In public view Congress, but neither candidates nor sponsors of bills,
will first allocate in a uniform amount
but when repeating these will consider time, place and manner of speech, including repetition.”
This amendment will never distort or unbalance speech protections
because it only requires each generation to follow the Constitution's speech protections
as that generation's Supreme Court finds them.
By tracking First Amendment protections exactly it can never risk protected speech.
This clause is designed to last.
Where Amendment I protects freedom of speech,
it also authorizes Congress and the states to pass laws respecting an establishment of speech: to regulate different forms - commercial, political, cultural, etc. - differently, protecting some forms more.
(It connotes this by placing speech and religious rights in parallel.)
This allows other sections of the Constitution to be involved in some forms of speech. It doesn’t violate content neutrality to allow the Commerce Clause to impact commercial speech.
But Congress can't abridge freedom of speech: keep it in name only but gut it in practice.
Regulations with reasonable parameters and a legitimate public purpose don't abridge.
Because Article I, Section 4 addresses the time, place and manner of holding elections,
Amendment I allows Congress or a state to reasonably limit political speech conduct by:
prior to an election, appointment or an action by Congress or the Executive)
then regulation of manners that cost money is by manner).
But this amendment gives the government no power over speech content.
It's content neutral.