EX-31 Rule 13a-14(d)/15d-14(d) Certification. IXIS Real Estate Capital Trust 2007-HE1 Mortgage Pass-Through Certificates, Series 2007-HE1, issued pursuant to the Pooling and Servicing Agreement dated as of January 1, 2007 (the "Pooling and Servicing...Morgan Stanley ABS Capital I Inc. IXIS Real Estate Capital Trust 2007-He1 • March 28th, 2008 • Asset-backed securities
