They are NOT "co-equal branches". (I dare anyone to find the phrase "co-equal branches" in any founding document of the United States).
The Executive is the weakest of the three branches. Historically, all three branches have jockeyed for power supremacy but it always ends as it should with the Congress on top. Or there is a crippling stalemate with the the nation on the bottom.
"The Legislative is supreme" John Locke said. And so it should be. The only branch of government elected directly by the people.
That supreme legislature - the US Congress needs to assert its power and responsibility to pass the governance needed to control the economy - create jobs. Congress needs to empower the President with the tools for creating jobs - the biggest hurdle to the economic recovery of this nation.