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In the last season, Lori Greiner, a QVC personality with 120 patents, joined the show occasionally, replacing one of the men.

Ms. Corcoran was seemingly star-struck in her visit to Capitol Hill, beginning her remarks by saying, “I’ve never seen a real senator before.” She went on to ask if she could take one of the paper coasters on the witness table that said “U.S. Senate.”

Sen. Benjamin L. Cardin, Maryland Democrat, replied with a laugh that “budgets are tight.”