WASHINGTON – Top aides to President Joe Biden on Sunday began talks with a group of moderate Senate Republicans and Democrats on a $1.9 trillion coronavirus relief package as Biden faces increasing headwinds in his effort to win bipartisan backing for the initial legislative effort of his presidency.Lawmakers on the right question the wisdom of racking up bigger deficits while those on the left are urging Biden not to spend too much time on bipartisanship when the pandemic is killing thousands of Americans each day and costing more jobs amid tightening restrictions in many communities.At least a dozen senators met for an hour and 15 minutes in a virtual call with White House National Economic Council director Brian Deese and other senior.