Clausen - Swenson Roxane and Steve Clausen of South Sioux City, Neb., and Lucy and Lyle Swenson of Storden announce the engagement of their children, Stephanie Clausen and Michael Swenson. Stephanie is a native of South Sioux City, Neb., and graduated from the University of Nebraska-Lincoln with a Bachelor or Arts degree in psychology. She also is a graduate of Adler Graduate School with a Master of Arts in marriage and family therapy. She is presently employed as an early childhood counselor with Greater Minnesota Family Services in Cottonwood and Murray counties. Mike is a native of Storden and a graduate of Alexandria Technical College with a degree in marketing and sales. He is presently employed as a senior sales engineer with Back Up Power Source in Slayton. A late May wedding is planned in the Black Hills of South Dakota.