the number appears to have grown from 32 to 35 recently:
"A committee staffer said HASC determined the Navy’s one-LCS request was “damaging to the two construction yards” – the Navy had previously said it needed to buy three a year to maintain shipyard efficiencies and to keep both Austal USA and Fincantieri’s Marinette Marine healthy ahead of the frigate competition next year – and so the subcommittee recommended the full committee include funding for three ships. That would put the Navy at 35 LCSs total, compared to its stated need of 32, ..."
etc., source is USNI News linked
Apr 26, 2018