i want to follow up with what callan asked. you mentioned in your opening remarks about the biden administration will not accept the reality of what happened over a decade ago with the first china shock. how far is the biden administration willing to go to prevent that from becoming a reality? what are some of these specific actions that you could take? sec. yellen: well, i don't want to get into where we are on this, but i did, last week, visit a firm in atlanta that was a dynamic and technologically advanced producer of solar cells in the early 2000's. this was a time when china ramped up its capacity to produce solar panels enormously. prices plummeted, and in 2017, the firm finally have losses that were so steep, it went out of business. it went bankrupt. and one of the goals of the inflation reduction act, of course, a key goal is to reduce emissions, to address climate change, but also it is intended to bolster our supply chains and create some capacity in the united states, to produce these critical clean energy products