Federal Grits tight-lipped on contents of Wednesday's budget

(CP) - The Trudeau government isn't tipping its hat on what's coming in the federal budget on Wendesday, March 22nd.

The opposition parties were prodding for hints from Prime Minister Trudeau in the House of Commons on Monday, March 20th.

Trudeau said only that the budget will detail how the Liberals plan to ``invest'' in the middle class.

He added more private-sector cash is needed to make those investments, especially when it comes to infrastructure.