Yes, see National Interest.

Yes, the FCC has authority over fiber and cable. Skim the amended Communications Act of 1934 (47 U.S. Code § 151 - Purposes of chapter; Federal Communications Commission created [1]):

> For the purpose of regulating interstate and foreign commerce in communication by wire and radio so as to make available, so far as possible, to all the people of the United States, without discrimination on the basis of race, color, religion, national origin, or sex, a rapid, efficient, Nation-wide, and world-wide wire and radio communication service with adequate facilities at reasonable charges...

[1] https://www.law.cornell.edu/uscode/text/47/151