Republicans pushed ahead with their plan for a massive overhaul of the U.S. healthcare system backed by President Donald Trump, with debates lasting long into the evening. Republican lawmakers face resistance from conservatives who say the bill, which would create a system of tax credits to coax people to buy private insurance on the open market, is not radical enough. Democrats denounce it as a gift to the rich and say informed debate on the plan is impossible without knowing its cost. Trump vowed to expand the number of aircraft carriers as a means to project American power abroad. Trump's expansion plans come as evidence mounts that potential enemies have built new anti-ship weapons able to destroy much of the United States’ expensive fleet of carriers. And as they have been for decades, carriers remain vulnerable to submarines. Contractors likely breached security and handed over documents describing the Central Intelligence Agency's use of hacking tools to WikiLeaks, U.S. intelligence and law enforcement officials told Reuters. Two senior U.S. senators asked the FBI and Justice Department for any information they have on President Trump's unsubstantiated claim that his predecessor Barack Obama wiretapped him during the 2016 U.S. presidential campaign. Graham later told CNN that if the Justice Department does not cooperate with the senators' request, subpoenas would be issued.