This would be just the third veto Barack Obama has made, but the White House says today that he’ll go there if the Senate on Thursday endorses a bill to upend the FCC’s net neutrality rules. The resolution to scrap the regulations — which are due to take effect on November 20 — is similar to one that the House passed in April. The Senate vote could be close: Texas Republican Kay Bailey Hutchinson’s bill has 42 co-sponsors. Supporters include Maine Republican Olympia Snowe, who favors net neutrality but says the issue should be decided by Congress — not the FCC. In today’s “Statement of Administration Policy,” the White House says that “the open Internet enables entrepreneurs to create new services without fear of undue discrimination by network providers.” For example, Comcast wouldn’t be able to favor transmissions over its broadband lines for a service it likes, such as Hulu, over those of a rival such as Netflix. The administration says that disapproval of net neutrality would “threaten the very foundations of innovation in the Internet economy and the democratic spirit that has made the Internet a force for social progress around the world.” If the Senate passes the bill, then the administration statement says “his senior advisers would recommend that he veto the Resolution.” Even if Obama stops a congressional effort to overturn the rules, the FCC will have to defend them in court from a challenge brought by Verizon. The phone company says the FCC doesn’t have the authority to set rules for the Internet.