In an interest rate-cutting environment, AGNC Investment and Annaly Capital have real growth potential.The Federal Reserve this week is expected to approve the first of what will likely be several prime lending rate cuts over the next couple of years in its efforts to keep the U.S. economy on an even keel moving forward. Perhaps no sector of that economy is set to benefit as much as the housing sector, and more specifically mortgage REITs (real estate investment trusts).In simple terms, mortgage REITs are s ...