DRAFT new SG Invitiation Policy

For the SG's consideration.

SG Invitation Policy.md

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+# WHATWG Considerations for Individual participation by Steering Group Invitation Policy
+
+## Joining the WHATWG via Steering Group Invitation
+
+Persons who wish to join the WHATWG and participate in their personal capacity 
+(the <a id="requestor">**Requestor**</a>), but for various reasons are unable to sign the 
+[Contributor and Workstream Participant Agreement] under any of the existing terms
+(for example, the [Individual] is working in the [Field of Web Technologies] or the
+[Entity] employing the individual is unable to join), may request special 
+<a id="sg-invitation">**Steering Group Invitation**</a> status. This policy describes the conditions and
+procedures for this process.
+
+The [Steering Group] expects to grant [invitations][Steering Group Invitation] sparingly. 
+Wherever possible, persons employed by, contracting, or otherwise working for an
+[Entity] shouldseek to have the Entity execute the
+[Contributor and Workstream Participant Agreement].
+
+The [Steering Group] must approve an invitation by unanimous consent.
+
+## How to request Steering Group Invitation status
+
+1.	File an issue in the [WHATWG/sg](https://github.com/whatwg/sg/issues) repo requesting
+    [Steering Group Invitation] status along with other relevant details or information 
+    relevant to the request.
+2.	The [Steering Group] will discuss the matter with the [Requestor] in the issue.
+3.	Either the [Requestor] or the [Steering Group] may request a private meeting to discuss
+    confidential special considerations.
+4.	Each [Steering Group Member] must indicate support in the issue (for example by a "+1"
+    or explicit indication of support).
+5.	Once all [Steering Group Members] have indicated support, the [Requestor]’s information
+    is added to a database, and the [Requestor] is invited to sign the 
+    [Contributor and Workstream Participant Agreement] as an [Individual] with 
+    [Steering Group Invitation] status.
+
+## Steering Group decision considerations
+
+The [Steering Group] reserves the right to approve or reject a request for a 
+[Steering Group Invitation] for any reason.
+
+Some factors that the [Steering Group] will consider when evaluating a request 
+are (but are not limited to):
+
+* Hardship or difficulty in getting approval for a related [Entity] to join.
+* The type and nature of the related [Entity] and potential IPR concerns.
+*	The expected value of the potential participant’s [Contributions].
+*	The degree of involvement to which the [Individual] or [Entity] is in the
+  [Field of Web Technologies].
+*	Other specific circumstances related to the [Individual] or [Entity].
+
+## Pre-approval
+
+A person wishing to join the WHATWG using the [Steering Group Invitation] status 
+must be pre-approved *before* attempting to sign the 
+[Contributor and Workstream Participant Agreement]. Once pre-approval, 
+as noted above, has been granted, the person may sign as an [Individual] with
+[Steering Group Invitation] status. Otherwise, the attempt to sign the agreement
+will fail.
+
+## Cancelation of Steering Group Invitation
+
+The [Steering Group] reserves the right to terminate the [Steering Group Invitation]
+status as indicated in [Termination]. The person may re-execute 
+[the agreement][Contributor and Workstream Participant Agreement] under any of the
+other existing terms, but will no longer be able to use the 
+[Steering Group Invitation] status.
+
+[Contributions]: ./IPR%20Policy.md#21-contribution
+[Contributor and Workstream Participant Agreement]: https://participate.whatwg.org/agreement
+[Entity]: https://participate.whatwg.org/agreement#entity
+[Field of Web Technologies]: ./IPR%20Policy.md#210-field-of-web-technologies
+[Individual]: https://participate.whatwg.org/agreement#individual
+[Requestor]: ./SG%20Invitation%20Policy.md#requestor
+[Steering Group]: ./SG%20Agreement.md#steering-group
+[Steering Group Invitation]: ./SG%20Invitation%20Policy.md#sg-invitation
+[Steering Group Member]: ./SG%20Agreement.md#steering-group-member
+[Termination]: https://participate.whatwg.org/agreement#termination