Please answer the following question: Facts:   - caption: swanlund -- champaign chair emeritus at university of illinois at urbana    - institution: uiuc    - field: law and economics    - school tradition: law and economics      - birth date: 11 april 1946    - name: thomas s. ulen    - color: darkorange    - nationality: american    - alma mater: stanford -rrb- dartmouth college -lrb- b.a. -rrb- university -lrb- ph.d. -rrb- oxford university -lrb- m.a.   Based on these bullet points, write a short biography describing the life of thomas ulen .
Answer:
thomas shahan ulen is an american law and economics professor , currently serving as swanlund chair emeritus at the university of illinois at urbana-champaign -lrb- uiuc -rrb- .