Congressman Himes (CT) and eight other members of Congress wrote to FINRA and to the Securities and Exchange Commission questioning the typical 7% gross spread in U.S. IPOs. The letter appears to have been prompted by a somewhat dated journal article that discusses fees in European IPOs. A link to the text of the letter is available here: https://himes.house.gov/press-release/himes-leads-letter-sec-finra-regarding-ipo-gross-spreads.