Canada calls on foreign governments to root out immigration fraud. Why can't we?

The Harper government is going straight to the source of most of Canada’s immigration to attack fraud in the system, encouraging officials in countries such as India, China and the Philippines to consider following its steps to crack down on crooked consultants.

Immigration Minister Jason Kenney will spend three days this week in India, where he will ask officials to focus more law-enforcement resources and share more information with Canada on “immigration fraudsters’’ who often charge applicants thousands of dollars and use fake documents to bolster their cases.

In an interview with The Globe and Mail, Mr. Kenney said he will also ask Indian officials to consider whether they may need a bill similar to one introduced in Parliament this June – the Cracking Down on Crooked Consultants Act – which would make it a crime for a person who is not a lawyer, notary or member of a recognized association of immigration consultants to accept a fee for providing immigration advice.

http://www.theglobeandmail.com/news/politics/immigration-minister-calls-on-india-china-to-root-out-immigration-fraud/article1696943/

If liberal, progressive, internationalist, beloved Canada can ask the sources of illegal immigration to crack down on immigration fraud, why can't the U.S.A. take it to Mexico, Haiti and Jamaica?

Instead, we let the Mexican government sue in U.S. courts to enjoin the enforcement of U.S. immigration laws!