President Obama turned his attention to the need for more clean-energy funding Monday, arguing that an expanded investment is needed to lay the foundation for long-term economic growth, cut dependence on foreign oil and slow the process of global warming. Obama, speaking to a group of renewable-energy company owners and investors, said the country has “known the right choice for a generation (and that) the time has come to make that choice.” In the years ahead, the United States “can remain the world’s leading importer of foreign oil, or we can become the world’s leading exporter of renewable energy,” Obama argued. “We can allow climate change to wreak unnatural havoc, or we can create jobs preventing its worse effects