Has Mexico's economy suffered from people moving to the US?

No; it has actually remained relatively healthy thanks to immigrants getting into the US; especially if you consider them as an "export" (i.e. Mexico exports cheap labor into the US).

Mexican immigrants are people with little to no education who do not reach the United States because of its culture or lifestyle; they immigrate into the US to get jobs that offer greater wages than those of the same kind found in Mexico. For instance, while the average chambermaid would earn $15,012 in the United States, she would earn as little as $4,896 in Mexico.

Now, as they immigrate into the US, they leave their family and friends behind; they usually send a fraction of their earnings back to Mexico; these are known as remittances. During 2013, Mexican immigrants sent approximately $22 billion back to Mexico, which is approximately 1.6% of the Mexican economy at nominal value.
No; it has actually remained relatively healthy thanks to immigrants getting into the US; especially if you consider them as an "export" (i.e. Mexico exports cheap labor into the US).

Mexican immigrants are people with little to no education who do not reach the United States because of its culture or lifestyle; they immigrate into the US to get jobs that offer greater wages than those of the same kind found in Mexico. For instance, while the average chambermaid would earn $15,012 in the United States, she would earn as little as $4,896 in Mexico.

Now, as they immigrate into the US, they leave their family and friends behind; they usually send a fraction of their earnings back to Mexico; these are known as remittances. During 2013, Mexican immigrants sent approximately $22 billion back to Mexico, which is approximately 1.6% of the Mexican economy at nominal value.