Using data from the 1973-1997 Survey of Doctorate Recipients, this study documents recent trends in the career outcomes of doctorates in science and engineering (S&E) and then, using a modified version of the shift-share technique, it examines the role that non-citizen doctorates in S&E may have played in the changing outcomes of citizen S&E doctorates in academe. The analysis shows that citizens hold fewer positions in academe than expected after accounting for the overall growth in S&E doctorates and the differential rates at which degrees were minted to the two groups. Notably, this shortfall cannot be attributed to citizens’ lack of success in holding the "choice" positions within academe --full-time tenure track or permanent positions-- rather to their lack of success in holding postdocs or other temporary, soft money appointments. The analysis cannot determine whether the “displacement” that occurred was a voluntary response of citizens to the lure of opportunities elsewhere or an involuntary response indicative of having been pushed out by foreign talent/