President Trump on Saturday signed an executive action promising an extra $400 in weekly unemployment benefits, a potential lifeline for the millions of Americans who lost their jobs a result of the coronavirus pandemic.Trump's efforts to partially restore the sweetened jobless benefits, which expired at the end of July, hinges on cash-strapped states being able to adapt a new unemployment system and fund one-fourth of the aid.CLICK HERE TO SUBSCRIBE TO THE KTVU NEWSLETTERStates have two options to fund the $100 share they owe: They could count the first $100 they already pay in standard, weekly benefits to meet that requirement.