Scientific laboratories and startup internet opportunities have been a powerful American magnet. By 2000, 23% of scientists with a PhD in the U.S. were immigrants, including 40% of those in engineering and computers. Roughly a third of the United States' college and universities graduate students in STEM fields are foreign nationals—in some states it is well over half of their graduate students. On Ash Wednesday, March 5, 2014, the presidents of 28 Catholic and Jesuit colleges and universities, joined the "Fast for Families" movement. The "Fast for Families" movement reignited the immigration debate in the fall of 2013 when the movement's leaders, supported by many members of Congress and the President, fasted for twenty-two days on the National Mall in Washington, D.C.