Four House Democrats — including two icons of ultraprogressive microfaction “The Squad” and two 2024 Senate hopefuls — are facing ethics questions for potential violations ranging from acceptance of impermissible gifts and improper solicitation of campaign contributions to use of taxpayer funds for political purposes and campaign donations for personal use.Rep. Alexandria Ocasio-Cortez (D‑N.Y.) is under investigation for the extravagant “Tax the Rich” dress she wore to the 2021 Met gala. The House Ethics Committee revealed earlier this month that it had expanded the probe after receiving an 18-page …