The House floor debate on immigration right now will stretch over two days, with two separate sets of amendments, which is unusual. The reason appears to be an attempt by Jeff Flake of Arizona to insert a “sense of the House” amendment that America needs a foreign-worker program. The objective of trying to get this amendment in the bill is that if and when the Senate passes an amnesty/guestworker bill early next year, supporters of that approach in the House can say that they’ve already approved the concept, so now they need to adopt the details. The political problem is that if the “sense of the House” guestworker provision is in the enforcement bill, the pro-enforcement Republicans threaten to join with the Democrats to kill the whole bill. See ongoing details here.