What is the proccesof becoming a u.s custo,

Hi,
I found this one the CBP, customs and border patrol website - you can visit www dot cbp dot gov / careers for more information as well.
Good luck!

Prepare to Apply
U.S. Customs and Border Protection protects the public against terrorists and the instruments of terror. We steadfastly enforce the laws of the United States while fostering our Nation's economic security through lawful international trade and travel. We serve the American public with vigilance, integrity and professionalism.

Ready to join the team of dedicated men and women of the U.S. Customs and Border Protection and begin your journey of making an outstanding contribution to public service? Apply Now!

Go to USAJOBS (For more detailed instructions, visit the USAJOBS Resource Center.)
Search for Desired Vacancy Opportunity. Review the entire vacancy announcement for important information about who may apply, job qualifications, duties, position requirements, salary, and duty location. Use this information to decide if your interests, education, and experience are a right match for the job. Be sure to take note of the HR Contact listed on the vacancy announcement. If you should have any questions during or after the vacancy open period, you will need to have this contact information.
Apply to the Vacancy. Carefully follow the specific instructions provided in the “How to Apply” section of the vacancy announcement. Be sure to submit all required documents requested in the vacancy announcement to receive full consideration. If you are unable to apply on-line or need reasonable accommodation for any part of the application process, notify the Human Resources Office contact identified on the announcement at least one day prior to the closing date for further instructions.
Application Evaluation. Once your complete application is received, an evaluation of your qualifications and ranking will be determined. Application status updates will be sent to individuals who provide a valid email address on the online questionnaire, or you may check your status by logging into your USA JOBS account. If you have applied to an entry level position for Border Patrol Agent; Customs and Border Protection Officer; Agriculture Specialist; Air Interdiction Agent; or Marine Interdiction Agent you may check your application status by logging into the Central Applicant Self-Service (CASS) system.
Selection. The names and applications of the highest-ranking candidates are referred to the manager or selecting official. If further evaluation or interviews are required, you will be contacted directly. Selection procedures are subject to Federal Civil Service laws, which ensure that all applicants receive fair and equal treatment in the hiring process.