The White House on Wednesday cautioned against making assumptions about President Barack Obama's changes to immigration rules based on a new federal contract proposal from the Homeland Security Department to buy enough supplies to make as many as 34 million immigrant work permits and residency cards over the next five years. The Associated Press reported earlier in the day the contract proposal suggested that the Obama administration appeared to be preparing for an increase in the number work permit applications form of immigrants living illegally in the country. The U.S. government produces about 3 million work permits and residency identification,...