Lawmakers are pressing the SEC to act on Trump’s order, which could bring Bitcoin and crypto into America’s $12 trillion 401(k) retirement market. | Credit: Getty Images. Key Takeaways A bipartisan group of nine lawmakers wrote a letter urging the SEC to update retirement plan guidance. Trump signed an executive order last month opening the$12 trillion 401(k) market to crypto investment. Roughly 90 million Americans are invested in 401(k) retirement plans. A bipartisan coalition of nine House la ...