Gov. Calderon wound up her latest lobbying efforts here Tuesday for the island's Section 956 economic initiative, but so far the proposal had not surfaced in President Bush's tax cut plan undergoing scrutiny in both the House and the Senate. While the governor maintained, "We don't have any firm expectations" that the island initiative would become part of the massive tax program, sources report that efforts were being made to get the Puerto Rico provision attached to a new Senate version that was introduced Tuesday and will be marked up by Thursday in the Finance Committee. Finance Chairman Charles Grassley,...