Just weeks before the elections, Congress is unable to agree on legislation regarding the nation’s 12 million undocumented immigrants. Legislators are at loggerheads over such disparate proposals as conditional legalization, guest-worker programs and massive deportations. In a sad testimony to the lack of bipartisan leadership, the only thing Congress has authorized this year is the construction of a $2.2 billion, 700-mile fence on the Mexican border.

Remarkably, not one single U.S. lawmaker has addressed why an estimated 1.1 million people cross the border every year looking for work. This omission allows our politicians to divert public attention away from the way U.S. policies cause massive migrations.

In the 1960s and