Template:USPL

Description
This links to a specific Act of Congress as a Public Law via:
 * the United States Government Printing Office (http://www.gpo.gov), for 104th Congress to present;
 * THOMAS through Cornell, for 100th Congress through 103rd Congress; or
 * No link for 1st Congress through 99th Congress.

Usage
Use:  

Examples
The 14th Public Law of the 93rd Congress:
 * returns

The 50th Public Law of the 103rd Congress:
 * returns

The 222nd Public Law of the 109th Congress:
 * returns

Note
To make this work when is not a 3-digit number, #if was used.

This, in turn, creates an error: error: unrecognised punctuation character "{" which only shows up here, but works fine otherwise.

Can someone fix this problem?