We have asked some of our supporters for statements on our campaign and on its goals. We list them below.

"Science is, by nature, democratic: great ideas are not constrained by nationality, religion, gender or ethnicity.  Indiscriminate barriers may not stop the flow of ideas but they impede the ability of individuals to discuss, listen and criticise which lies at the root of the scientific process. At a time when technology has opened up the world to the free exchange of ideas, imposing artificial barriers is self-defeating."

- Prof Carlos S. Frenk, FRS, Cosmologist, Director of the Institute for Computational Cosmology (ICC) and Ogden Professor of Fundamental Physics, at Durham University, UK. Winner of the Royal Astronomical Society Gold Medal, Max Born Medal, Hoyle Medal, and the Gruber Prize in Cosmology.


"Science is by its nature base-democratic. We do not care about race, gender, religion, sexual orientation etc. We are all united in our quest to understand the laws of nature. We are therefore profoundly shocked and appalled that a so-called democratic country breaks with this important fundamental tradition of science."

- Prof Ruth Durrer, Cosmologist and Head of the Department of Theoretical Physics at the University of Geneva, Switzerland




“Science knows no borders, and transcends gender, religion, and language. That is why the story of science is the Greatest Story Ever Told.. It is one of the few activities that unites all humans, and it is diminished whenever we exclude anyone from the scientific enterprise. While I do not want to discourage anyone from attending a meeting in the US that helps their professional development I am happy to support the effort here to encourage the US to rescind their arbitrary and discriminatory policy, which demeans us all.”

- Prof Lawrence M. Krauss, Director of the Origins Project and Foundation Professor, Arizona State University, and author, most recently of “The Greatest Story ever Told ... So Far”.



"By its very nature science knows no boundaries. Walling off any group, for any reason, from full participation damages the entire enterprise of science. We must be scientists without borders. "

- Prof Rocky Kolb, Dean of Physical Sciences at the University of Chicago and winner of the Dannie Heineman Prize for Astrophysics