Writer, Scholar, Attorney

I am an Attorney of Counsel at Miller Mayer LLP, Professor of Immigration Law Practice at Cornell Law School, and Nonresident Fellow at the Migration Policy Institute. I am also co-author of Immigration Law and Procedure, a 21-volume treatise on immigration law. View my credentials.

Expert Witness

I have testified before Congress and in state and federal court on a variety of immigration issues. Links to cases and my congressional testimony are available here.

Media Relations

Immigration is headline news. I help members of the media understand the complicated legal issues behind controversial immigration topics. View some of my media clips here.


Trump vetting review could lead to ‘backdoor’ travel ban

I was quoted in a USA Today article on President Trump's extreme vetting efforts. I said some countries willing to cooperate with new visa vetting procedures may not have the technological capabilities the U.S. demands, and that the U.S. should be realistic in...
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Make America Great Again: Admit More Refugees to the U.S.

I co-authored an op-ed for World Refugee Day, held on June 20th. In our current political climate, some consider refugees a security threat and a drain on national resources. This piece discusses how America benefits economically, socially, and morally by accepting...
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Cornell faculty panelists discuss immigration reform in America

I joined fellow Cornell faculty members on a panel addressing immigration issues under the new administration. We received many audience questions on current policies and the complications of migrating to the U.S. and crossing its borders. In response to one question,...
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Torture Victim, Expecting a U.S. Handshake, Was Given Handcuffs Instead

"It’s very unusual — almost unprecedented — that ICE would arrest an asylum applicant who is at a U.S.C.I.S. office waiting for their asylum interview," I said in an article by The New York Times. Read the full story...
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Trump’s Own Tweets Help Kill His Government’s Travel Ban, Again

I commented again on President Trump's travel ban tweets and their negative effect defending his legislation. For the second time, the President's own comments have aided the courts in knocking down his executive order. Fortune covers this issue in the article,...
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U.S. 9th Circuit Court of Appeals refuses to reinstate Trump’s travel ban

I was quoted in an LA Times article about the 9th circuit's refusal to reinstate Trump's travel ban. I stated the Supreme Court might find it easier to reject the travel ban based on a violation of existing law rather than constitutional grounds.  “It is always hard...
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Trump pressing ahead with ‘extreme vetting’ in spite of court battles

“This form simply puts into writing questions that consular officials could have and may have asked visa applicants before to determine whether they should be admitted to the United States,” said Stephen Yale-Loehr, a professor of immigration law at Cornell Law...
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How President Trump’s Tweets Hurt His Travel Ban

President Trump's twitter page has been a major focus of his time in office thus far, stirring up a lot of attention from the media and the public. In early June, tweets regarding his revised immigration executive order drew attention that I believe will only do harm...
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U.S. now can ask travelers for Facebook, Twitter handles

I was quoted by USA Today in an article addressing the new Department of State form that asks for visa applicants' social media account information. The effort to review social media accounts is an already existing one, however, I believe the new form will be used as...
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9th Circuit presses Trump admin on legality of travel ban

CNN discusses why Donald Trump's travel ban executive order is up for another round of debate with the 9th Circuit. 4th US Circuit Court of Appeals has also been tapped to make a decision. No matter how the two courts rule, I predict this case will go to the Supreme...
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