Why do Catholics not baptize by immersion?

In the bible, it refers many times to baptism by immersion. When did the Catholic church move away from baptism by immersion and begin baptism using the current process? Why did they change the process and not baptize by immersion?

You should find this tract useful:

Baptism: Immersion Only?

DISCLAIMER: The views and opinions expressed in these forums do not necessarily reflect those of Catholic Answers. For official apologetics resources please visit www.catholic.com.