The promise was to "support" a federal balanced budget amendment (BBA) as a first step toward fiscal responsibility. The evidence documents that outcome. The PRIMARY source — Ernst's own office press release dated February 5, 2015 — is fully reachable and confirms she "co-sponsored a Balanced Budget Amendment to the Constitution, introduced by Senator Orrin Hatch (R-UT)," and it contains the cited quote verbatim: "A balanced budget amendment is a commonsense way of reining in Washington's out of control spending." That is precisely the act of support she promised, taken within weeks of taking office. The Congress.gov citation for S.J.Res.6 (114th Congress) blocked the automated fetcher (HTTP 403 — a bot-blocking artifact, not a dead link) but was independently confirmed via web search: the URL is live, the cited quote is the resolution's actual title, Hatch is the sponsor, it was introduced in February 2015, and it drew every Senate Republican as a cosponsor. FULL (not CHAMPIONED) is correct because the same press release shows Ernst as one co-sponsor supporting Hatch's amendment, not the lead sponsor/author/driver of the effort — the task requires distinct leadership evidence for CHAMPIONED, which is absent. No floor vote occurred during the relevant period, so cosponsorship plus a public advocacy statement is the concrete act of support; the outcome does not overstate the evidence.