|
|
|
|
|
|
|
Careers / Plumbers, Pipefitters, and Steamfitters |
|
|
|
|
|
|
|
|
Table of Contents |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Interesting Fact |
|
|
|
When the U.S. Constitution was written, the federal government was not allowed to collect income tax. All revenues came from trade tariffs. The 16th Ammendment later permitted federal income tax. |
|
|
|
|
|
|
|
|
|