As in effect on August 7, 2011.
| 7-Aug-2011 |
| Modify the criteria for approval of science curricula |
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| Modify the Risk Management Policy |
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| 3-Oct-2010 |
| Create position statement regarding non-indemnification of host institutions |
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| 26-Jul-2007 |
| Add Active Advisor to list of those eligible to wear the Top Triangle pin |
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| 9-Feb-2007 |
| Modify Risk Management Policy to clarify BYOB principles |
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| 28-Jul-2006 |
| Rename Triangle Citation, create Ellison Onizuka Young Alumnus Award, and modify details for National Honorary Member and Triangle Wall of Fame |
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| 2-Apr-2006 |
| Create University Relations Policy |
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| Add explicit ability for National Council to admit selected guests to a directors-only meeting |
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| 10-Mar-2006 |
| Revise Risk Management Regulation |
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| 12-Aug-2005 |
| Convention resolution regarding open expansion policy |
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| 31-Jul-2005 |
| Convention resolution regarding non-discrimination policy |
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| Modify Approved Courses criteria to allow consideration of majors closely related to engineering, architecture, and science |
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| 22-Feb-2004 |
| Create Richard H. Sudheimer Interfraternal Leadership Award |
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| Replace Approved Courses Committee with Approved Courses Advisor |
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| Convention resolution prohibiting little sister programs |
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| 16-Oct-2002 |
| Modify nomination procedures for Triangle Wall of Fame |
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| 8-May-2002 |
| Modify distribution procedures for Constitution, Bylaws, and Regulations |
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| 30-May-2000 |
| Explicitly forbid electronic distribution of the Ritual and Graduation Ceremony |
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| Loosen distribution requirements for the National Constitution, Bylaws, and Regulations |
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| Specify distribution requirements for the Graduation Ceremony |
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| 28-Feb-1999 |
| Add procedure regarding funding of chapter disciplinary activities |
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| 28-Jun-1998 |
| Mandate chapter participation in National liability insurance program |
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| 27-Jun-1998 |
| Define guiding policies for National Council |
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| 1-May-1998 |
| Remove non-compliance option for National insurance program |
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| 2-Mar-1998 |
| Define criteria for National awards |
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