Jace, here is the scary part of EPACT07: From section 321, I found:
"(v) BACKSTOP REQUIREMENT- If the Secretary fails to complete a rulemaking in accordance with clauses (i) through (iv) or if the final rule does not produce savings that are greater than or equal to the savings from a minimum efficacy standard of 45 lumens per watt, effective beginning January 1, 2020, the Secretary shall prohibit the sale of any general service lamp that does not meet a minimum efficacy standard of 45 lumens per watt."
So, after 2020, I don't see us using halogens for general service lighting anymore.