Where's the "HAW HAW" to this?

Where's the "HAW HAW" to this? Please tell me; I'm lost. Unless the joke's on us - the U.S. It came in today's email. Thanks for your comments.

http://www.hawhawjokes.com/political/Disaster_in_Mexico.htm

"Disaster in Mexico

"A big earthquake with the strength of 8.1 on the Richter scale has hit Mexico. 150,000 Mexicans have died and over a million are injured.

"The country is totally ruined and the government doesn't know where to start with providing help to rebuild.

"The rest of the world is in shock. Canada is sending troopers to help the Mexican army control the riots. The European community is sending food and money.

"The United States of America is sending 150,000 replacement Mexicans."