How can ‘We are not Criminals be True?

So what is a Criminal?
According to the Merriam-Webster Dictionary a criminal is “one who has committed a crime.”
Technically speaking the migrants are correct. They are still in Mexico and have not violated any United States laws.

Labor Day

Labor Day, the first Monday in September, is a creation of the labor movement and is dedicated to the social and economic achievements of American workers. It constitutes a yearly national tribute to the contributions workers have made to the strength, prosperity, and well-being of our country.