Bar opened in Mount Vernon in April
Remarks comes days after Trump boasts times 'are changing back again'
Senate companion bill introduced last month
Values Voter Summit featured anti-gay Alabama Republican
California Democrat a potential 2020 presidential candidate
'Religious freedom' key point of address to social conservatives
Flyer stokes fears about LGBT people as if they were public health crisis
Group’s influence declined in recent years
Calif. Democrat among Trump’s most vocal critics