and wonders now if she is now under investigation for exceeding those limits (last paragraph)
under the Constitution speech both is free and unrestrained
yet any damage(s) caused by self expression may require retribution and/or compensation
and liability under the Constitution is unlimited for persons that are truly free
slander and libel are the best examples of damages, but there are others
hence, AOC's concerns

What's obvious is AOC didn't write that letter.