Chinese Migrants fastest group crossing Illegally into US at the Southern Border

This was broadcast back in Feb 2024.

Questions
How did these people leave China?
How much money did they pay to travel from China to US?
Did the CCP send them here?
Why are they here?
Are they a part of a Sleeper Cell that will be activated by the CCP at the right time?

There are many incidents of Chinese Nationals attempting to breach security of Military Bases by entering or gathering intelligence.