Democrats and Republicans in Congress want to know what it will take to expand real estate investment trust participation in GSE credit risk transfers. They wrote the Securities and Exchange Commission last week asking it to help alleviate the regulatory challenges REITs face when it comes to participating in credit risk transfers. “Specifically, we are requesting your expertise in unlocking a meaningful amount of capital in the form of mortgage real estate investment trusts to participate in these transactions,” said the letter from the 13 congressman.They cited the FHFA’s goal to grow the credit risk-sharing program with an expanded investor base and said that mortgage REITs would be a likely candidate if the obstacles were removed.